4.3 Functions and 4.4 Graphing Functions

The set of x-coordinates of the ordered pairs of a function is called the ______________?

• range

• relation

• domain

• correlation

A local parking garage charges $5.00 for the first hour plus $1.50 for each additional hour or part of an hour. Write a function rule where x represents the hours, and y represents the cost. 

• y = 1.50x + 5
  Function

• y = 5x + 1.50
  Function

• y = 1.50x + 5
   Not a Function

• y = 5x + 1.50
  Not a Function

Given the following function. Write an equation.
x:    { 1,    2,    3,    4}
y:    { -6,  -5,  -4,  -3}

• y = x - 7

• y = -7x

• y = 7 - x

• Not a function

Which is the dependent variable?
A= # of hours worked
B= amount of your paycheck

• A

• B

Write a function rule for the statement.

• y = 2 – x

• y = x – 2

• y = 2x

• y = x/2

What is the definition of a function?

• Has inputs and outputs

• Every input has only ONE output

• Inputs have different outputs every time

• x-values and y-values

Write a function rule for the statement.

• y = 3x

• x = y/3

• y = x/3

• x = 1/3y

Is this function linear or nonlinear?

• Linear

• Nonlinear

Is this function linear or nonlinear?

• Linear

• Nonlinear

Which set is an example  of a linear function?

• A

• B

• C

• D