Module 3 Review

What is happening in section C?

• Water level is rising

• Water level is lowering

• Water level is steady

Given this mapping diagram what is the domain?

• -8,-5,7

• -6,1,2,3

• -8,-6,-5,1,2,3

Does this represent a function?

• Yes

• No

Given this set of ordered pairs, (2,1), (7,8), (4,3), (5, 2), (9, 4), (6, 7), (2, 4), (8, 2) . What is the range?

• 2,4,5,6,7,8,9

• 1,2,3,4,7,8

• 1,2,3,4,5,6,7,8,9

• all real numbers

Does this set of ordered pairs represent a function?

(2,1), (7,8), (4,3), (5, 2), (9, 4), (6, 7), (2, 4), (8, 2)

• Yes

• No

 $f\left(x\right)=\frac{1}{4}x+5,\ find\ f\left(-8\right)$  

• 37

• 3

• -7

• 7

 $f\left(x\right)=x^2-8\ find\ f\left(-4\right)$  

• -16

• 24

• 8

 $f\left(x\right)=\frac{2}{3}x-5\ \ \ find\ \ f\left(12\right)$  

• 4

• 3

• 13

Write in function notation

 $3x+4y=18$  

Write in function notation

 $y=-2x+1$