Determining & Evaluating Functions

Which set of values is a function?

• {(9,5),(10,5),(9,-5),(10,-5)}

• {(3,4),(4,-3),(7,4),(3,8)}

• {(6,-5),(7,-3),(8,-1),(9,1)}

• {(2,-2),(5,9),(5,-7),(1,4)}

Tags

CCSS.8.F.A.1

Is this graph a function? Explain.

• Yes, it is a function. Because it is OK to have multiple x-values correspond to f(x)=5.

• No, it is NOT a function. Because it is NOT OK to have multiple x-values correspond to f(x)=5.

Tags

CCSS.8.F.A.1

Is this graph a function? Explain.

• Yes, it is a function. Because at x=-1, there are multiple corresponding y-values.

• No, it is NOT a function. Because at x=-1, there are multiple corresponding y-values.

• Yes, it is a function. Because at y=-2, there are multiple corresponding x-values.

• No, it is NOT a function. Because at y=-2, there are multiple corresponding x-values.

Tags

CCSS.8.F.A.1

Choose ALL that are TRUE about function.

• It is a function when every x-value is associated with one y-value.

• All functions are relations, but not all relations are functions.

• It is a function when each input in the Domain is paired with exactly one output in the Range.

• If a relation is a Function: It is OK for multiple inputs to share one single outputs, but it is NOT OK for multiple outputs to share one single input.

Tags

CCSS.8.F.A.1

Evaluate the function for the given value:

• 1

• 19

• -15

• -1

Tags

CCSS.HSF.IF.A.2

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

• -1

• 1

• -5

• 5

Tags

CCSS.HSF.IF.A.2

Evaluate f(33).

• 33

• 21

• 10

• 8

Tags

CCSS.8.F.A.1

CCSS.HSF.IF.A.1

Evaluate f(x)=-2x+13 for f(10).

• -7

• -197

• -33

• 7

Tags

CCSS.HSF.IF.A.2

Evaluate f(x) = x² for x = -8

• 16

• 64

• -16

• -64

Tags

CCSS.HSF.IF.A.2

What is the value of f(0)?

• 2

• 4

• 0

• -2

Tags

CCSS.HSF.IF.A.2