4.1 Relations and Functions Quiz Review

Evaluate f(3) for the function f(x) = 4x + 3.

Write your answer as an (x, y) coordinate point.

Tags

CCSS.HSF.IF.A.2

Consider the relation {(1, 6), (8, 4), (2, 6), (5, 4), (3, 9), (2, 7)}. Is it a function or a relation?

• Function

• Relation

Tags

CCSS.8.F.A.1

Evaluate f(1) for the function f(x) = 3x + 4.
Write your answer as an (x, y) coordinate point.

Tags

CCSS.HSF.IF.A.2

Evaluate f(-3) for the function f(x) = 3x + 4.

Write your answer as an (x, y) coordinate point.

Tags

CCSS.HSF.IF.A.2

Is this mapping diagram a relation or a function?

• Relation

• Function

Tags

CCSS.8.F.A.1

Use the graph to answer : is the relation a function?

EXPLAIN why or why not.

Use the graph to answer each of the following question:

What is f(0)?

• f(0)=4

• f(0)=1

• f(0)=0

• f(1)=0

Tags

CCSS.HSF.IF.A.2

Use the graph to answer each of the following question:

What is f(5)?

CAREFUL: THE GRAPH GOES UP BY 2'S!

• f(5)=2

• f(5)=1

• f(5)=0

• f(5)=-8

Tags

CCSS.HSF.IF.A.2

The function C(t) = 10 + 0.5t represents the number of cups of coffee ,C, that Stanton drinks in t hours.

What does C(2) represent?

• The number of cups of coffee that Stanton drinks in 10 hours.

• The number of cups of coffee that Stanton drinks in 50 hours.

• The number of hours that Stanton spends drinking 2 cups of coffee.

• The number of cups of coffee that Stanton drinks in 2 hours.

Tags

CCSS.HSF.IF.A.2

The function C(t) = 10 + 0.5t represents the number of cups of coffee ,C, that Stanton drinks in t hours.

Find C(8).

• C(8)=66

• C(8)=9

• C(8)=14

• C(14)=8

Tags

CCSS.HSF.IF.A.2