Algebra-1 Staar Review on attributes of linear functions

What is the slope of the graph of y=12x-19

• -19

• -12/19

• 19/12

• 12

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?

• 14 ft/yr

• 3 ft/yr

• 7 ft/yr

• 10 ft/yr

What is the equation in slope-intercept form of the line that passes through the points (- 4, 2) and (12, 6)?

• y = 0.25x + 3

• y = 0.25x − 4.5

• y = 4x + 18

• y = 4x − 42

Which graph best represents -5y = -6x+15

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What is the equation in slope-intercept form of the line that crosses the x-axis at 36 and is perpendicular to the line represented by

y = −4/9 x + 5 ?

• y = 4/9x + 16

• y = 4/9x - 16

• y =9/4 x + 81

• y = 9/4x - 81

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

What is the rate of change of y with respect to x for this function?

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

Which equation is best represented by this graph?

• y + 2 = 7/5(x + 7)

• y − 2 =7/5 (x − 7)

• y + 2 = 5/7 (x + 7)

• y − 2 = 5/7(x − 7)

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

What is the zero of f?

• 2

• 4

• -6

• -2

A system of equations is graphed on the grid.

Which system of equations does the graph represent?

• y = − x- 4

  y = 2x − 2

• y = −x + 4

  y = 2x − 4

• y = x − 4

  y = −2x − 2

• y = x + 4

  y = −2x − 4

The table shows the amount of pet food in cups remaining in an automatic feeder as a function of the number of meals the feeder has dispensed.

Based on the table, which function models this situation?

• f (n) = −3n + 24

• f (n) = −1/3 n + 16

• f (n) = −3n + 64

• f (n) = −1/3 n + 8