Grade 12 Algebra

GRADE 12 MATH: ALGEBRA LINEAR EQUATIONS & LINEAR FUNCTIONS

Grade XII is the culmination of 12 or more years of studying in the elementary and secondary education systems. It is the end of one's formal education unless one goes to college.

Grade 12 Algebra combines everything you have learned from grades K-12 mathematics and you need to be ready to pass your high school exit exam, like California's High School Exit Examination.

Here, we discuss linear equations and linear functions.

A straight line in the physical world can be described mathematically. We can described it using a linear equation. The word “linear” comes from the word “line”.

We can described the line in different forms, but here are 3 common ways to describe a straight line.

Straight Line Equation in Slope-Intercept Form: y = mx + b.

Straight Line Equation in Point-Slope Form: y - y1 = m(x - x1) since m = (y - y1) / (x - x1).

Straight Line Equation in General Form: Ax + By + C = 0.

A straight line equation demonstrates a linear function property if for every x value, there is only one y value. Therefore, based on this definition, a vertical line does not demonstrate a linear function.

Here’s a practice exam for GRADE 12 MATH: ALGEBRA LINEAR EQUATIONS & LINEAR FUNCTIONS.

Question 1-3. What is the slope-intercept form equation of a straight line that contains point (-1, -2) and has slope m = 40?

Answer: _____

Question 4. What is the slope-intercept form equation of a straight line that has y-intercept b = -2 and has slope m = -2?

Answer: _____

Question 5-6. What is the slope-intercept form equation of a straight line that has the equation 3x + 4y = 7?

Answer: _____

Question 7. What is f(10) using f(x) = 10x + 10?

Answer: _____

Question 8. What is f(10) using f(x) = 7?

Answer: _____

Question 9. What is (f+g)(x) using f(x)=-2x+4 and g(x)=3x+1?

Answer: _____

Question 10. What is (f-g)(x) using f(x)=-2x+4 and g(x)=3x+1?

Answer: _____

Think like a mathematician.

John Sindayen

CIT 230 Java

CIT 230 ADVANCED JAVA

The CIT 230 ADVANCED JAVA course is the most advanced Java programming course a student can take. There is also Android programming classes that Java programmers can take, but the only prerequisite course for that is Beginning Java.

Here's a practice exam for CIT 230 ADVANCED JAVA.

Question 1. Is this legal? String s[] = new s[5];

Answer: _____

Question 2. Is this legal? int[][] i = new int[];

Answer: _____

Question 3. Is this legal? int[][] i = new int[][];

Answer: _____

Question 4. Is this legal? java.util.Date[] date[] = new java.util.Date[2][];

Answer: _____

Question 5. Is this legal? char[] c = new char[5]; int i = c.length();

Answer: _____

Question 6. Will this code compile? ArrayList al = new ArrayList(); al.append(10);

Answer: _____

Question 7. Will this code run? ArrayList al = new ArrayList(); al.add(10);

Answer: _____

Question 8. Are two arrays with same contents equal?

Answer: _____

Question 9. Will this code compile? Arraylist al = new arraylist(); al.remove(0);

Answer: _____

Question 10. Will this code run? ArrayList al = new ArrayList(); al.remove(0);

Answer: _____

Advanced forward.

John Sindayen

CIT CS IS IT

COMPUTING AND INFORMATION TECHNOLOGY CIT: CS, IT, & IS

CIT is Computing and Information Technology or Computer Information Technology. It is generally the name of a department that teaches IT, CS, and IS type of courses.

CS is Computer Science and deals with the development of computer hardware and software, mainly the Operating System. IT is Information Technology and deals with the development of hardware and software, mainly applications, that processes business data. IS is Information Systems and deals with the entire computer systems including the users of these systems.

For example, in CS you will learn programming in C because it is the main language for writing OSes. In IT, which CIT often refers to, you will learn programming in Java because many applications, including web applications, used that language. In IS you will learn using Microsoft Word because it is what computer users used most often in the office.

Here's a practice exam for INFORMATION TECHNOLOGY.

Question 1-5. What does the acronyms CPU, A/L U, ROM, BIOS, RAM stand for?
Question 6. Are plotters input or output devices?
Question 7. Are joysticks input or output devices?
Question 8. Are scanners input or output devices?
Question 9. Are cameras input or output devices?
Question 10. Are network interface cards input or output devices?

If you're a student of CSN, you're welcome to attend these IS 101 Presentations and Programming Team Challenge.

Go Team!

John Sindayen

ENG 206 Literature

ENGLISH 206: ENGLISH LITERATURE II: NINETEENTH CENTURY TO THE PRESENT

Jane Austen was an English novelist born on December 16, 1775, the first year of the American Revolution on the other side of the world.

The genre of her novels was romance and her main characters were of the landed gentry, what we call the upper middle class in American society. American upper class can be compared with British aristocracy, those who have inherited a lot of money that they don't have to go to work at all. In contrast, the upper middle class need to go to work to maintain being in the upper middle class of society.

Among Jane Austen's novels that I have read are the following, in chronological order:
1. Pride and Prejudice. This is the story of a young woman pining to marry a man with the help of her mother.
2. Persuasion. This is the story of a woman pining to marry a man that her relatives prevented her to marry when she was a teenager.
3. Sense and Sensibility. I am working on reading this novel because there are at least 3 characters with the same first name as mine.

Here's a practice exam on ENG 206: ENGLISH LITERATURE 2.

Question 1. What is the name of the primary character in "Pride and Prejudice"?
Question 2. What is the name of the primary character in "Persuasion"?
Question 3. What is the name of the primary male character in "Pride and Prejudice"?
Question 4-5. What is the name of the primary male character in "Persuasion" and what was his rank?
Question 6-10. In your own words, rephrase the first sentence of the novel "Pride and Prejudice"?

It is a truth universally acknowledged.

John Sindayen

CIT 131 C Programming

CIT 131 BEGINNING C PROGRAMMING

The CIT 131 course is the introductory course to C programming. The C programming language does not have any classes, therefore, it is not an object-oriented or object-based programming language. It is a procedural programming language, like the old FORTRAN language. But compared to FORTRAN, it is a much simpler language to write and it is also more adept in solving any kind of real world problems.

Here's a practice exam for CIT 131 BEGINNING C PROGRAMMING.

Question 1. What is the C address of operator?
Question 2. What is the C dereference operator?
Question 3-5. Write a code that can read a floating point number from the user using a keyboard?
Question 6. Write a function header of a function named "increment" that accepts an address of an int type and returns nothing?
Question 7-8. Write a code that will output only one of the following numbers: 1, 4, 7, 10, 13, 16, 19?
Question 9. What's the maximum number given by the function rand()?
Question 10. Write a code to assign the number "1.23" to a pointer to a double variable named "multiplicand"?

My A, B, C's.

John Sindayen

COT127B Excel

COT 127B MICROSOFT OFFICE FOR OFFICES: EXCEL

COT 127B Microsoft Office for Offices is a course that teaches Microsoft Office 2013 editions of Word, Excel, PowerPoint, and Access.

While tutoring this course to a student, we came to the more complex nature of Microsoft Excel. If a color is not readily available in the array of colors, one can always customize the array to include a new color. You will need to know the RGB combination of that color, a set of 3 numbers each ranging from 0 to 255 and each range giving 2^8 or 256 unique colors.

Here's a practice exam on applying your skills in COT 127B MICROSOFT OFFICE FOR OFFICES.

Question 1-3. Apply the Ion Boardroom theme on a worksheet.

Answer: _____

Question 4-10. Change the color of the tab background to a color named "teal".

Answer: _____

In Living Color.

John Sindayen

Grade 7 Algebra

GRADE 7 MATH: ALGEBRA NUMBER THEORY

Grade VII is the beginning of high school for me. In the old days, Grade 7 started in Junior High School. Nowadays, Grade 7 is in the middle of Middle School. Go figure! It is no longer just elementary and high school, there's also something in the middle.

Here's a practice exam for the GRADE VII MATH: ALGEBRA NUMBER THEORY.

Question 1. What type of number cannot be divided by any number other than itself and 1?
Question 2. What type of number can be divided by a number other than itself and 1?
Question 3-6. List the prime numbers between 0 and 10.
Question 7. Is 1 a prime number?
Question 8. What is the multiplicative inverse of 1/2?
Question 9. What is the method to express a number as the product of only prime numbers?
Question 10. Write 24 as the product of only prime numbers?
Question 11. Write 25 as the product of only prime numbers?
Question 12. Is 2015 divisible by 1?
Question 13. Is 2015 divisible by 2?
Question 14. Is 2015 divisible by 3?
Question 15. Is 2015 divisible by 4?
Question 16. Is 2015 divisible by 5?
Question 17. Is 2015 divisible by 6?
Question 18. Is 2015 divisible by 7?
Question 19. Is 2015 divisible by 8?
Question 20. Is 2015 divisible by 9?

1, 2, 3, 4, 5, I caught a hare alive.

John Sindayen

CIT 130 Java

COMPUTER INFORMATION TECHNOLOGY CIT 130: BEGINNING JAVA

During last Friday's tutoring, a beginning Java student asked many questions about Java. He already has some understanding of computer programming because he had taken the introductory prerequisite programming course that teaches Raptor and Python. He was adept in the use of computers because he can copy an instance in a Mac computer screen into a Windows computer screen using a mouse. So naturally, after downloading all the necessary software to develop and run Java programs into his Mac, he was curious as to what he had just downloaded.

I answered all of his questions without a thought, except for that one where I added a few seconds later, "Well, actually, you can declare a method in Java without defining it, but you have to declare it as abstract."

Later, I concluded I must be a Java expert by now. And since it takes 10,000 coding hours to master a language, I added all the coding hours I've ever had and this is the result.

Years               pre-2013   2013   2014   2015
Days                           365    365    255
Coding outside      150        1      1      1
Coding inside class 600        8      8      6
Coding inside job                     2      1
Yearly hours        750        3,285  4,015  2,040
Total hours         10,090

Here's a practice exam for CIT 130: BEGINNING JAVA.

Question 1. What kit do you need to develop and run Java programs?
Question 2. What environment do you need to run Java programs if you are only a computer user?
Question 3. What specific software provides the JVM?
Question 4. What specific software provides all the pre-defined Java classes?
Question 5. What Java edition has all the functionalities to develop and execute server applications?
Question 6. What Java edition do you need to develop applications designed for mobile devices and embedded systems?
Question 7. What Java edition contains the Java language specification and all library classes to develop stand-alone applications?
Question 8-10. Write a Java program using 3 lines that prints "Hello World!" to the output console without using any book or reference but only using your mind.

I am master of my domain.

John Sindayen

IS 101 Computers

INFORMATION SYSTEMS IS 101: COMPUTING FUNDAMENTALS

IS 101 is the introductory course to learning about computers. While it is an introductory course, it is also a course requiring lots of memorization of the many computer terminologies in placed in society. For example, you need to know what are bit, byte, terabyte, CPU, microprocessor, etc., etc.

Here's a practice exam for IS 101 COMPUTING FUNDAMENTALS.

Question 1. What is Android?

Question 2. Are modern OSes real-time system or multitasking system?

Question 3. What is the computer terminology for a single computer system that can be configured to accept multiple user accounts?

Question 4. What is the name of the temporary storage in RAM where data are stored until the Paste command is used?

Question 5. What service tool is used to keep Windows updated and which can be set to get Microsoft Office updates?

Question 6. What is open source?

Question 7. What program is used to view all the programs currently being run by Windows?

Question 8. What is the first software that runs when a computer is turned on and before the OS takes control of the computer?

Question 9. What do you use to start a computer with only the bare minimum programs to run it?

Question 10. What computer components are machine-readable instructions?

Been there, done that.

John Sindayen

CHEM 60 Chemistry

CHEMISTRY 60: INTRODUCTION TO GENERAL CHEMISTRY

Chemistry 60 is the introductory course to chemistry in LACC, a course I took many moons ago. I remember my Chemistry 101 professor mentioning to the class that I was in the Dean's List the next semester, which goes to show how much I learned in Chemistry 60, my first exposure to chemistry since I did not take it in high school.

Here's a practice exam in CHEMISTRY 60: INTRODUCTION TO GENERAL CHEMISTRY.

Question 1. What is the study of the structure, properties, and transformations of matter?

Answer: _____

Question 2. What is the unit of measurement use in chemistry?

Answer: _____

Question 3. Convert 1 centigram into gram.

Answer: _____

Question 4. Convert 1 millimeter into meter.

Answer: _____

Question 5. Convert 1 microliter into liter.

Answer: _____

Question 6. Why do chemists use the metric system instead of the United States unit system?

Answer: _____

Question 7. What is the measure of the amount of matter in a substance?

Answer: _____

Question 8. What is the measure of the size of a matter?

Answer: _____

Question 9. What is the measure of the amount of space a matter occupies?

Answer: _____

Question 10. What is the measure of the coldness or hotness of a matter?

Answer: _____

Question 11-17. How many significant figures are in the following numbers?

12.345 Answer: _____

0.012 Answer: _____

123 Answer: _____

0.12 Answer: _____

1.0002 Answer: _____

0.012000 Answer: _____

1.000 Answer: _____

Question 18. When doing an arithmetic operation on the quantities 1.00023 and 45, how many significant figures must the result have?

Answer: _____

Question 19. What is the measure between two events occurring in a matter?

Answer: _____

Question 20. What is the result of dividing the mass by the volume of a matter?

Answer: _____

Dans la nature rien ne se crée, rien ne se perd, tout change.

John Sindayen

CIT 131 C Programming

COMPUTING INFORMATION TECHNOLOGY CIT 131: BEGINNING C PROGRAMMING

CIT 131 is the introductory course for writing programs using the C language in CSN. The C programming language is mainly used for system programming. Applications programming mainly used an OOP language like C++ and Java. Web programming mainly used JavaScript on the client side and Java and SQL on the server side.

Here's a practice exam for CIT 131: BEGINNING C PROGRAMMING.

Question 1. What do you use to tell the C preprocessor you are writing a preprocessor directive?
Answer: _____
Question 2. What's the name of the software that modifies a C program before compilation?
Answer: _____
Question 3. What is the directive that replaces every occurrence of a constant macro like PI in the text of a C program with 3.14159 before compiling?
Answer: _____
Question 4. What texts are ignored by a compiler?
Answer: _____
Question 5. What name of a function does every C program have?
Answer: _____
Question 6. What does this code do? return (0);
Answer: _____
Question 7. Write a code to print the value of the char variable "letter"?
Answer: _____
Question 8. What variable type can the format string placeholder %lf read?
Answer: _____
Question 9. What format string placeholder is used to display an integer?
Answer: _____
Question 10. What format string placeholder is used to display a floating point value?
Answer: _____

Oldies but goodies.

John Sindayen

IS 101 Word 2013

INFORMATION SYSTEMS IS 101: MICROSOFT WORD 2013

IS 101 is the Introduction to Information Systems course. It is the introductory course to learning about computers, both hardware and software stuff. In some programs, it includes learning Microsoft Word, Excel, PowerPoint, and Access. In some courses, it also includes passing the IC3 certification exams. Depending on the course requirements of passing, it can be one of the most demanding courses in college.

Here's a practice exam for IS 101 MICROSOFT WORD 2013.

Question 1. What is the name of the container that holds all the Microsoft Word commands and functions?
Answer: _____
Question 2. What is the name of the items in the same line as the dialog launchers?
Answer: _____
Question 3. What is the Word tool that lets you copy the format of a text and apply it to 1 or more texts?
Answer: _____
Question 4. What is another name for tabs?
Answer: _____
Question 5. What tab is used to display all the built-in references of a document?
Answer: _____
Question 6. What tab lets you insert footnotes in a document?
Answer: _____
Question 7. What tab can you used to type the current date and time automatically?
Answer: _____
Question 8. What tab can you used to display the horizontal ruler?
Answer: _____
Question 9. What tab is used to insert endnotes?
Answer: _____
Question 10. What tab is used to edit the properties of a Word file?            
Answer: _____

A word to the wise.

John Sindayen