Review of Relations and Functions

Function Vocab

100

True or False-A relation is the opposite of a function.

What is FALSE?

200

The first set of numbers in an ordered pair.  (Domain or range?)

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

The test to tell if a graph is a function

What is the Vertical Line Test?

Evaluating Function Rules

100

Evaluate y=-3x if x=2

What is -6?

200

Evaluate y=2x+1 if x=-2

What is -3?

300

Evaluate y=-3 - x if x=6

What is -9?

400

Evaluate y=25 + 4x if x=5

What is 45?

500

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

What is -30

Equations in Function Form

100

2y = 2x + 2

What is y = x + 2?

200

y - x = -1

What is y = x-1?

300

2x + 3y = 12

What is y = (-2/3)x +4?

400

8x + 2y = -4

What is y = -4x -2 ?

500

x = 4y + 3

What is y= (1/4)x -(3/4)?

Relations

100

State the domain of the function {(4,-2),(-1,1),(2,-3),(3,0)}

What is {4,-1,2,3}?

200

State the range of the function {(4,-2),(-1,1),(2,-3),(3,0)}

What is {-2,1,-3,0}?

300

Find the domain and range of {(-1,5),(2,3),(4,2),(-1,2)}

What is a domain of {-1,2,4} and a range of {5,3,2}?

400

Find the domain and range of {(-3,4),(0,10),(11,8),(4,5)}

What is a domain of {-3,0,11,4} and a range of {4,10,8,5}?

500

Find the domain and range of {(-5,8),(-5,4),(6,9),(3,10)}

What is a domain of {-5,6,3} and a range of {8,4,9,10}?

Is it a Function?

100

Is it a function? {(2, 3), (4, 5), ( -2, 6)}

What is YES because x does not repeat?

200

Using the vertical line test does the graph of the points (1,3) and (1,5) represent a function?

What is False, the points fail the vertical line test

300

Is it a function?

x	y
2	4
1	5
2	6

What is NO because x repeats?

400

Is it a function?

What is YES because it passes the Vertical Line Test?

500

Is it a function?

What is NO because it does not pass the Vertical Line Test?