Staar Linear Functions

The table shows the linear relationship between the average height in feet of trees on a tree farm and the number of years since the trees were planted. What is the rate of change of the average height in feet of the trees on the farm with respect to the number of years since the trees were planted? (hint: slope = y/x)

• 14 ft/yr

• 14 yr/ft

• 7 ft/yr

• 7 yr/ft

The graph of a linear function is shown on the grid.

What are the x-intercept and the y-intercept of the line?

• x-intercept: (8, 0)

  y-intercept: (0, -2)

• x-intercept: (-2, 0)

  y-intercept: (0, 4)

• x-intercept: (-2, 0)

  y-intercept: (0, 8)

• x-intercept: (4, 0)

  y-intercept: (0, 8)

The graph of linear function f passes through the point (1, -9) and has a slope of -3.

What is the zero of f?

• A

• B

• C

• D

• A

• B

• C

• D

Find the slope:

• 3/4

• 4/3

• -3/4

• -4/3

What is the y-intercept?

• -1

• 3

• -3

• -2

What does 'b" represent in y = mx + b

• y-intercept

• below

• rate of change

• slope

What is the equation of a line with a slope of 2 and a y-intercept of -5?

• y = 5x - 2

• y = 2x - 5

• y = -2x - 5

• y = 2x + 5

What is the equation of a line when m = -3 and b = 5?

• y = -3x + 5

• y = -3x - 5

• y = 5x + 3

• y = -5x - 3