Evaluating Functions for Inputs in a Given Domain

Is this graph a function or not a function? 

• Function 

• Not a Function

• Function
• Not a Function

Evaluate for f(-5)

• 1

• 0

• 2

• -2

Given f(x) = -4x - 10 and f(x) = 10. Find x

• x = -5

• x = 5

• x = -50

• x = 30

Given the graph of the function

Find f(0)

• -2

• 2

• 4

• 0

Given f(x) = 4x+5

Find f(4)

• 21

• -11

• -31

• 25

Find f(33)

• 33

• 11

• 10

• 8

What does the notation h(4) = 5 mean?

• After 5 week the plant is 4 inches tall

• The plant grows at a rate of 5/4 inch per week

• After 4 weeks the plant is 5 inches tall

• The plant grows at a rate of 1 inch per week

Is the diagram of inputs and outputs a function? Why.

• Yes, because the x-value 11 has two y-values pair with it.

• Yes, because each x-value has only one y-value paired with it.

• No, because the x-value 11 has two y-values pair with it.

• No, because each x-value has only one y-value paired with it.

Ms. B is collecting pencils. The function p(x) = 5x+12 tells us the total amount of pencils Ms. B has after collecting for x number of days.

What is the meaning of p(8) = 52?

• Ms. Brackemyer starts with 8 pencils and ends with 52.

• After 8 days, Ms. Brackemyer has 52 pencils.

• Ms. Brackemyer starts with 52 pencils and gets 4 more every day.

• Every day, Ms. Brackemyer gets 4 new pencils until she has 52.