Linear Function Models

What is the slope of the line that is passing through points (-1,-1) and (2,-10)?

• -3

• 2

• 4

• 3

Which equations represent a linear function?

A: y = −4x

B: y = 2/x

C: y = x − 1

• All are linear

• Only C

• A and C

• Only A

Find the rate of change of the linear function from the point (0,8) to the point (18,20).

• 12

• 3/2

• 12/18

• 2/3

Which equation represents a horizontal line below?

• y = 5x + 8

• y = -2x

• x = 10

• y = 10

A company' saved $50,000 and plans to save an additional $7,000 each month. Which equation represents this situation?

• y = 57,000x

• y = 7,000x + 50,000

• y = 50,000x + 7,000

• 7,000x + 50,000y = 57,000

Which linear function has an initial value of 5?

A: y = 5x + 4

B: y = 4x + 5

C: y = −4x − 5

D: y = −5x + 4

• A

• B

• C

• D

Find the rate of change of the linear function shown.

y = 1/3x - 3

• -3

• 3

• 1/3

• 3/1

What is the initial value of the function: y = -4x - 5

• 4

• -5

• 5

• -4

Which linear function has the greater rate of change, the one described by the equation

y = 0.5x + 3 or the graph?

• The equation has the greater rate of change.

• The graph has the greater rate of change.

A line passes through the origin and has points (5,18) and (6,36) on its line. Is this a direct variation?

• YES

• NO