Slope and Functions Unit Test

The table shows Vanessa's height in inches for two different years. Which is a correct conclusion about the rate of change shown in the table?

• Vanessa grows about 41.7 inches per year.

• Vanessa grows about 6 inches per year.

• Vanessa grows about 1.2 inches per year.

• Vanessa grows about .83 inches per year.

Ariel is emptying the water from a 10 gallon cooler. The graph shows the water level in the cooler as she empties it. Which best describes the rate of change shown in the graph?

• The water level decreases 10 gallons per second.

• The water level decreases 1 gallon every 2 seconds.

• The water level decreases 3 gallons every 2 seconds.

• The water level decreases 2 gallons every 3 seconds.

The slope of a graphed line is 2/5. Which of the following triangles could lie on the line?

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Which of the following situations does not have the same unit rate as the graph shown?

• Asher buys gum for $0.20 a piece.

• A daycare has six workers for every 30 children.

• Melanie reads 9 pages of her book every 45 minutes.

• Richie earns $10 every 2 hours to pet sit for his neighbor.

Which of the following is true about the graph shown?

• The graph is not a function because it does not start at (0, 0).

• The graph is a function because it passes the vertical line test.

• It is not a function because it is not linear.

• It is a function because it has a constant rate of change.

The set of ordered pairs shown represents y as a function of x.

{(9, 8), (-2, -14), (6, 2), (-3, -16), (_, _)}

Which of the following could be the missing ordered pair?

• (9, -8)

• (-3, 9)

• (-9, 8)

• (6, -2)

Which is true about triangles ABC and DEF?

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Which of the following shows y as a function of x?

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Which is true about the mapping shown?

• It represents a function because each x-value corresponds to exactly one y-value.

• It represents a function because each y-value corresponds to exactly one x-value.

• It does not represent a function because each x-value corresponds to exactly one y-value.

• It does not represent a function because each y-value corresponds to exactly one x-value.

The graph shows the amount in Harold's savings account over a certain number of weeks. What is the rate of change?

• 10.5

• -10.5

• 1.5

• -1.5