ALGEBRA STAAR REVIEW: WRITING FUNCTIONS

What is the equation in standard form of the line that passes through the point (4 , -8) and has a slope of 1/4 ?

• x - 4y = 36

• x - 4y = 28

• x - 4y = - 36

• x - 4y = - 28

What is the equation of the line that has a slope of 0 and passes through the point (6 , -8)

• x = 6

• y = 6

• x = - 8

• y = - 8

What is the equation in slope-intercept for of the line that passes through the points (-4 , 47) and (2 , -16) ?

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Which equation in standard form has a graph that passes through the point (-4 , 2) and has a slope of 9/2 ?

• 9x - 2y = 36

• 9x - 2y = 26

• 9x - 2y = - 40

• 9x - 2y = - 10

The table represents some points on the graph of a linear function. Which equation represents the same relationship?

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The table represents some points on the graph of a linear function. Which equation represents the same relationship?

• y = - 3x - 10.5

• y = - x - 3.5

• y = 3x - 10.5

• y = x - 3.5

What is the equation in standard form of the line that passes through the point (1 , 24) and has a slope of - 0.6 ?

• 3x + 5y = 125

• 3x + 5y = 77

• 3x + 5y = 123

• 3x + 5y = 115

Researchers in Antarctica discovered a warm sea current under a glacier that is causing the glacier to melt. The ice shelf of the glacier had a thickness of approximately 450 m when it was first discovered. The thickness is decreasing at an average rate of 0.06 m per day.

Which function can be used to find the thickness of the ice shelf in meters x days since the discovery?

• t(x) = 450 - 0.06x

• t(x) = - 0.06(x + 450)

• t(x) = 450 + 0.06x

• t(x) = 0.06(x + 450)

An organization has a monthly budget of x dollars. Every month $2070 is spent on salaries. One-fourth of the remaining budget is spent on monthly activities. Which function can be used to find the amount in dollars spenton monthly activities ?

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Which equation can be represented by the graph shown above?

• -3x + 8y + 16 = 0

• 3x - 8y + 16 = 0

• -3x - 8y - 16 = 0

• 3x + 8y - 16 = 0