Function Notation

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

• y = 2x-3

• f = 2x - 3

• f(x) = 2x-3

Tags

CCSS.HSF.IF.A.2

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

• Let x = 2

• Let y = 2

Tags

CCSS.HSF.IF.A.2

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

Tags

CCSS.HSF.IF.A.2

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

• f(1) = 1

• f(1) = 4

• f(1) = 0

• f(1) = 3

Tags

CCSS.HSF.IF.A.2

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.

Tags

CCSS.HSF.IF.A.2

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

• -1
• 1
• 5
• -5

Tags

CCSS.HSF.IF.A.2

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

• 0
• -3
• 3
• -1

Tags

CCSS.HSF.IF.A.2

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

• f(-1) = -20
• f(-1) = -24

Tags

CCSS.HSF.IF.A.2

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

• x = -5
• x = 5
• x = -50
• x = 30

Tags

CCSS.HSF.IF.A.2

What is f(1)?

• 1
• 5
• 0
• 4

Tags

CCSS.HSF.IF.A.2