Week 4 - Check for Understanding

You are required to copy down each problem neatly on paper and you need to simplify or solve showing ALL steps/work. An image of your handwritten work needs to be uploaded into Canvas in order to get credit for this assignment.

• I understand

• I do not understand

What is the definition of absolute value?

• The distance a number is to zero

• A positive number

• A number that has a value with a different sign

Evaluate: |-12|

• 12

• -12

• 0

• 1.2

What is the opposite of -12

• 12

• -12

• 0

Order from Least to Greatest:

-13, -7, -18, |-14|, |5|

• -18, -13, -7, |5|, |-14|

• -18, |-14|, -13, -7, |5|

• -7, -13, |-14|, -18, |5|

• |5|, -7, -13, |-14|, -18

Solve for x
l 2x−1 l = 9

• x = 5 and x =-4
• x = 5 and x = -5
• Only x = 5
• No Solution

Solve for x
l 5x l = 40

• x = 8 and x =-8
• x = 35 and x = -35
• Only x = 8
• No Solution

Evaluate each expression.
| x + 9 | = -5

• -14
• -4
• {-14, -4}
• no solution

• a = 8, a = 5

• a = 2

• a = 8

• a = 8, a = 2

• {30, −30}

• {20, −20}

• {−5, 5}

• No Solution