Absolute value

Selina Wong, Christine Young

Lynn Carey

Introduction Have you every been confused

about Absolute Value?? Well this lesson will help you to understand absolute value You will learn to solve for the answer, comprehend it’s meaning and discover everything you need to know about this math concept. This will be used as a guide for you to help you on your math homework!

Vocabulary In order for you to understand Absolute

Value thoroughly you must know these vocabulary words.

- Positive Number: a number larger than zero.

- Negative number- A number with a value less than zero.

- Absolute Value: the distance away from zero.[[always a positive number]]

A Guided Lesson and Procedure•Now remember, Absolute value isn’t the value of the actual number, it is the distance between the number and zero. This may seem confusing right now, but after these few simple steps, you shall be an expert!

Working with Positive and Negative• The absolute value of

any number will always be positive.

• So if your working with positive numbers, like 1,2,3,4,5,6… then the absolute value will be the exact same thing as the number itself. ( |4| = 4 )

• It starts getting tricky when you are trying to find the absolute value of a negative number. The only thing different is that you change the negative sign to a positive sign. ( |-7| = 7).

Multiple Solutions

• Say you have an equation |7-3| that would equal 4. If you changed the three to an x, ( |7-x| ) then you would have a positive and a negative solution for x. This is because your answer could be positive or negative.

Practice Problems

•1) | 5 | = •3) | 3+2 | = •5) | -15/3 | =

•2) | -2 | = •4) | 7-4 | = •6) | 2x+1 | = 7

Practice Problem Solutions

•1) | 5 | = 5 •2) | 3+2 | = 5

•3) | -15/3 | = 5

•2) | -2 | = 2

•4) | 7-4 | = 11

•6) | 2x+1 | = 7•x = 3 x = -4

Relevance to Real Life The concept of absolute value influences daily life. For example, if you’re in a bank. You may be in debt with a negative sum of money. However, when you pay them back, you are paying them with a positive amount, therefore, you are filling in the “hole” created by the negative sum. This is one of the many examples that demonstrate absolute value.

THE END

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• and now.. THE FINAL END