Algebra I STAAR Released Review

A student borrowed $540 from a friend. He agreed to make monthly payments of $108 until the loan balance was paid off. The function shown models this situation, where f(x) represents the remaining loan balance in dollars after the student has made x monthly payments.

f(x) = 540 - 108x

Which statements are true about the domain and range of the function for this situation?

Select TWO correct answers.

• The domain of the function is

  {0, 1, 2, 3, 4, 5}.

• The range of the function is

  {0, 1, 2, 3, 4, 5}.

• The domain of the function is

  {0, 108, 216, 324, 432, 540}.

• The range of the function is

  {0, 108, 216, 324, 432, 540}.

• The domain of the function is the set of all real numbers.

Which inequalities best describe the domain and range of the part shown?

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Tags

CCSS.8.F.A.1

CCSS.HSF.IF.B.5

Which equation in slope-intercept form best represents the line that passes through these two points?

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What is the y intercept of this linear function?

Which function is best represented by this graph?

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Tags

CCSS.8.F.B.4

CCSS.HSF.LE.A.2

The value of y is directly proportional to the value of x. When x = 512, y = 128.

What is the value of y when x = 64?

• 256

• 32

• 16

• 8

What is the equation in standard form of the line that passes through the point (6, -1) and is parallel to the line represented by 8x + 3y =15?

• 8x + 3y = -45

• 8x - 3y = -51

• 8x + 3y = 45

• 8x - 3y = 51

Which equation best represents the line shown on the grid?

• y = 0

• y = -6

• x = 0

• x = -6

The graph of a line passes through the points (-3, 1) and (5, 8).

What is the slope the line?

• 9/2

• 7/8

• -9/2

• -7/8

Tags

CCSS.8.EE.B.5

• The worker packed 8 items in boxes per minute.

• The worker packed 37 items in boxes per minute.

• The worker packed 4 items in boxes per minute.

• The worker packed 15 items in boxes per minute.

Tags

CCSS.HSF-LE.A.1B