Function Notation

Multiple Choice

How would you write y = 2x - 3 in function notation?

• y = 2x-3

• f = 2x - 3

• f(x) = 2x-3

Multiple Choice

Let

$$h\left(x\right)=13-5x$$   What is $$h\left(5\right)=$$  ?

• $$h\left(5\right)=12$$  

• $$h\left(5\right)=3$$  

• $$h\left(5\right)=-2$$  

• $$h\left(5\right)=-12$$  

Multiple Choice

Given f(x) = x² - 1, what is the value of f(10)?

• 100

• 19

• 99

• 9

Multiple Choice

Using f(x) , g(x) , or h(x) instead of y is called using ......

• Slope Notation

• Variable Notation

• Intercept Notation

• Function Notation

Multiple Choice

Given h(x) = 5 - 9x, find h(8). 

• h(8) = -360
• h(8) = -67

Multiple Choice

Evaluate for f(1)

• 0
• -3
• 3
• 2

Multiple Choice

If a question asks you to find f(2), what does that mean?

• Let x = 2

• Let y = 2

Multiple Choice

If f(x) = 2x + 1, what would be your first step to find f(1)?

• Plug a 1 in for all the x's

• Set the function equal to 1

• Only plug a 1 into the left side

• Only plug a 1 into the right side

Multiple Choice

If f(x) = 2x + 1, find f(1).

• f(1) = 1

• f(1) = 4

• f(1) = 0

• f(1) = 3

Multiple Choice

If I know that f(2) = 4, what is another way I can write my answer?

• 2,4

• (2, 4)

• That is the only way to write it.

Multiple Choice

Evaluate f(-2) if f(x) = x + 3

• -1
• 1
• 5
• -5

Multiple Choice

For the function f(x) = -3(x-1) find f(0).

• 0
• -3
• 3
• -1

Multiple Choice

Given f(x) =
2x² + 5x - 17, find f(-1). 

• f(-1) = -20
• f(-1) = -24

Multiple Choice

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

• x = -5
• x = 5
• x = -50
• x = 30

Multiple Choice

What is f(1)?

• 1
• 5
• 0
• 4

Multiple Choice

What is x if
f(x) = -2?

• 4
• 0
• 3
• 8

Multiple Choice

What is f(8)? 

• 8
• 0
• 3
• -2

Multiple Choice

The function h(t) represents the height in inches of a plant after t weeks. 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

Multiple Choice

f(x) is the same thing as ______.

• y
• x
• input
• an equation

Multiple Choice

What is the definition of a FUNCTION?

• Each input is paired with more than one output

• x-values in a set of ordered pairs

• y-values in a set of ordered pairs

• Each input is paired with exactly one output

Multiple Choice

Given g(x) =
 4x - 7, find g(-9). 

• g(-9) = 29
• g(-9) = -43
• g(-9) = -29

• g(9) = -43