Model Linear Relationship

What is the slope of the line that passes through these two points (0, -2) and (3, -4)?

• 2/3

• -2/3

• 3

• -2

What is the slope of the line that passes through these two points (15, 20) and (20, 25)?

• 1

• 5

• -1

• -5

What is the equation of a line with a slope of 4 and a y-intercept of 2?

• y = -4x + 2

• y = -2x + 4

• y = 4x + 2

• y = 2x + 4

Why is this function linear?

• This is a linear function because it does not have a constant rate of change

• This is a linear function because it creates a curved line.

• This is a linear function because it have a constant rate of change.

• This is a linear function because it's y-intercept is (0,2)

Who has the greater rate of change?

What is the initial value in this equation?
y=8x+6

• 8

• 6

Is this function linear or nonlinear?

• Linear

• Nonlinear

Match the verbal description with the part of the graph it describes.  
Quickly decreases at a CONSTANT rate.

• D

• A

• F

• B

Match the verbal description with the part of the graph it describes.
Stays the same.

• F

• A

• D

• C

A dog walker earns $10 plus $3 per dog. What equation represents this model?

• y=3x + 10

• y=10x + 3

• y=13x

• y=10x - 3