Keystone Module Algebra

Find the slope of the line.

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Tara creates a budget for her weekly expenses. The graph shows how much money is in the account at different times. Find the slope of the line. Then tell what rate the slope represents.

• The slope is -50. The slope means that the amount of money in the account is decreasing at a rate of $50 every week.

• The slope is -50. The slope means that the amount of money in the account is decreasing at a rate of $50 every 2 weeks.

• The slope is -0.02. The slope means that the amount of money in the account is decreasing at a rate of $0.02 every week.

• The slope is 50. The slope means that the amount of money in the

  account is increasing at a rate of $50 every week.

Find the x- and y-intercepts.

• x-intercept: –10, y-intercept: 5

• x-intercept: 5, y-intercept: 10

• x-intercept: 10, y-intercept: –5

• x-intercept: 10, y-intercept: 5

Tell whether the function y = 5x - 3 is linear. If so, graph the function.

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• Not a linear function.

The graph shows a line of best fit for data collected on the price of a unit in relation to the number of units sold. What is the equation of the line of best fit?

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• None of the Above

Which scatterplot most likely has a line of best fit represented by y = 2x + 1?

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Which of the following equations represents the line that is drawn below?

• y = 0.72x + 1.4

• y = 0.72x - 1.4

• y = -0.72x - 1.4

• y = -0.72x + 1.4

Simplify: 6√125. The steps are shown below.

One of the steps shown is incorrect. Identify which step is incorrect.

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Simplify:

(6x³ + 3x² - 5) + (4x³ - 4x - 3)

• 10x³ + 3x² - 4x – 8

• 2x³ + 3x² - 4x – 2

• 10x³ - 4x + 8

• 10x³ + 3x² - 4x + 8

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