Category 2 STAAR

When the data in the table are graphed on a coordinate grid, the points all lie on the same line. The slope of the line is ​ ​ (a)   . The y-intercept is ​ (b)   .

• -7
• 7
• 17
• 0
• 10
• -4

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8.4C

Beatrice won her town lottery. She has been awarded a monetary gift and will receive equal payments each month for the next 10 years. The table shows the total of Beatrice's winnings at the end of x months. Which statement describes the relationship in the table?

• • Beatrice was given $650 for winning, and she will receive a $200 payment each month.

• Beatrice was given $550 for winning, and she will receive a $150 payment each month.

• • Beatrice was given $550 for winning, and she will receive a $200 payment each month.

• • Beatrice was given $650 for winning, and she will receive a $150 payment each month.

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8.4C

A student took 32 minutes to complete a 20 question history assignment. Choose two points that lie on the line with the slope that best represents the number of questions per minute. Select TWO answers.

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8.4B

The graph displays the growth of a plant, in millimeters. Based on the given graph, explain the slope of the line in terms of the unit rate of the plant’s growth, in millimeters, per week.

• • The plant grows 125 mm each week so the slope of the line is 125.

• • The slope is one because the plant grows one mm each week.

• Not here

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8.4B

The set of ordered pairs shows a relationship between x and y.

 

{(–3, 2), (–2, 2), (2, –3), (3, –2)}

y ​ (a)   a function of x since the x-values ​ (b)   correspond with exactly one y value.

• is
• is not
• do
• do not

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8.5G

Which representation shows y as a function of x?

• 
• 
• 
• {(–2, –1), (–1, 0), (0, 1),

  (1, 2), (2, 3), (2, 4)}
  

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8.5G

The graph of a linear function is shown on the grid. Create an equation that represents the relationship on the graph. Move the correct answer to each box. Not all answers will be used.

y= ​ ​ (a)   x +​ ​ (b)  

• 6
• -4

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8.5I

The table shows the linear relationship between the total cost for a ride in a taxi and the number of miles the customer rides in the taxi. Which function can be used to find y, the total cost for a ride in a taxi after riding x miles in the taxi?

• y = 0.80x + 4.50

• • y = 4.05x + 1.25

• y = 1.25x + 4.05

• • y = 4.50x + 0.80

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8.5I

Which situation does NOT represent a proportional relationship?

• The cost of repairing a computer at $54.75 per hour

• The cost of purchasing printer cartridges at $34.85 per cartridge including delivery

• The cost of repairing a copy machine at $35.75 per hour with a service charge of $80.50

• • The cost of purchasing boxes of paper for $25.39 per box plus a shipping fee of $3.25 per box

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8.5H

Which equation represents a proportional relationship between x and y?

• • y = 4x

• • y = 14x-2

• y = 0.25x + 1.25

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8.5F