Review of Functions

Function Vocab

100

True or False-A relation is a set of ordered pairs

What is TRUE?

200

The set of first coordinates of a relation or a function

What is Domain?

300

The set of second coordinates in a relation or a function

What is the range?

400

A relation that assigns exactly one value in the range to each value in the domain?

What is a function?

500

TRUE or FALSE there is only one x value in every function 

TRUE

Evaluating Function Rules

100

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

What is -6?

200

Evaluate f(x)=2x+1 if x=-2

What is -3?

300

Evaluate f(x)=-3 - x if x=6

What is -9?

400

Evaluate f(x)=25 + 4x if x=5

What is 45?

500

Evaluate f(x)=-(4x+2) if x=7

What is -30

Translating Function Rules

100

Add 9 to the value of X to get Y

Y=X+9

200

Subtract 18 from the value of Y

Y=X-18

300

Multiply the value of X by 3

Y=3x

400

Times the value of X by 2 then add 4 to get Y

Y=2x+4

500

Subtract 7 from X then divide by 2

Y=X-7/2

Writing Function Rules

100

Y=2x

Y=2 times a number

200

Y=4/x

Y= 4 divided by a number

300

Y=7x+2

Y= a number times 7 plus 2

400

Y=12x-5

Y= a number times 12 - 5

500

Y=-2x-5

Y= negative 2 times a number minus 5