Functions Evaluate Functions

Function or Not a Function?

• Function

• Not a Function

Tags

CCSS.8.F.A.1

What is the definition of function?

• Has inputs and outputs

• Every input has only ONE output

• Inputs have different outputs every time

• x-values and y-values

Tags

CCSS.8.F.A.1

• Function
• Not a Function

Which letter stands for the input or independent variable in a function?

• f

• x

• y

• none of these are correct

Tags

CCSS.8.F.A.1

CCSS.HSF.IF.A.1

f(x)=x²-5x
f(4)=

• -4

• 126

• 24

• 84

Tags

CCSS.HSF.IF.A.2

For the function f(x) = 4x + 2, find x such that f(x) = 2.

• 10

• 2

• -2

• 0

Tags

CCSS.HSF.IF.A.2

If f(x) = 2x+1, what would the function look like once you substitute in a 1 to find f(1)?

• f(x) = 21+1

• f(1) = 2 (1) + 1

• f(1) = 2x (1) + 1

Tags

CCSS.HSF.IF.A.2

What is f(2)?

• -4

• 8

• 0

• 5

Tags

CCSS.HSF.IF.A.2

For what value of x does f(x) = -2?

• 0

• -5

• 3

• -3

Tags

CCSS.HSF.IF.A.2

What is f(5) for the function f?

f(x) = 2(x - 7)

• 3

• -4

• -3

• 1

Tags

CCSS.HSF.IF.A.2