Algebra Review #3

Which is an equation of the line with a slope of 2/3 passing through the point (4, -1)

• y= -1/4x + 2/3

• y=-4x + 2/3

• y=2/3x - 5/3

• y= 2/3x - 11/3

Which scatterplot has a line of best fit represented by y= 3x + 1

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The graph represents the relationship between the number of candy bars sold and the amount of profit made during the softball team's candy bar sale. Which is closet the the minimum number of candy bars that must be sold to make a $400 profit?

• 650

• 700

• 750

• 800

Which table does not show a direct variation?

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Which graph shows the y varies directly as x?

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Which set of ordered pairs satisfies an inverse variation?

• (6, 2) and (8, 4)

• (2, -3) and (4, 5)

• (4, -2) and (-5, 10)

• (2, 6) and (3, -4)

In the table below, y varies inversely as x. What is the missing value?

• 1

• 3

• 0.5

• 0.25

If the point (2, -10) lies on the graph of a direct variation, which represents the direct variation equation?

• y= -20x

• y= -20/x

• y= -5x

• y= -5/x

For a group of objects made of the same material. the weight of an object varies directly with its volume. If an object that has a volume of 30 cubic inched weighs 24 ounces, what is the constant of variation?

• 4/5

• 720

• 5/4

• 6

The time required to complete a job varies inversely as the number of people working. It takes 4 hours for 7 electricians to wire a building. How long would it take 3 electricians to do the job?

• 1 hr and 43 min

• 5 hr and 15 min

• 7 hr and 30 min

• 9 hr and 20 min