Understanding Absolute Value Expressions

The video tutorial explains how to evaluate absolute value expressions. It begins with the concept of absolute value, emphasizing that it represents a number's distance from zero, which is always positive. The tutorial provides examples, such as evaluating the absolute value of negative numbers and understanding the opposite of absolute values. It also covers how to calculate the difference between absolute values, using substitution and simplification techniques. The video aims to clarify these concepts with practical examples and visual aids like number lines.

What is the absolute value of -51?

• -51

• 0

• 51

• 102

How do you find the absolute value of a negative number?

• Multiply by -1

• Add 1 to the number

• Subtract 1 from the number

• Take the positive of the number

What is the absolute value of -18?

• -18

• 0

• 36

• 18

If d is -18, what is the absolute value of -d?

• -18

• 0

• 18

• 36

What is the opposite of the absolute value of -24?

• 48

• -24

• 0

• 24

How do you simplify the expression -(-24)?

• -24

• 0

• 24

• 48

What is the result of the expression |x| - |y| when x = -2 and y = 4?

• -2

• -6

• 6

• 2

How far is -2 from 0 on the number line?

• 4 units

• -2 units

• 0 units

• 2 units

How far is 4 from 0 on the number line?

• 2 units

• 0 units

• -4 units

• 4 units

What is the absolute value of a positive number?

• Double the number

• Zero

• Negative of the number

• The number itself