12/05/2024: Unit 2A CA Practice Assessment (Classwork)

Identify the function whose graph passes through the point (9, 3).

• y = 3x

• y = \frac{x}{3}

• y = \frac{1}{3}x

• y = 9x

Elena goes for a long walk. This graph shows her time and distance traveled throughout the walk. What was her average speed, in miles per hour?

• 2.5 miles per hour

• 3.5 miles per hour

• 2 miles per hour

• 3 miles per hour

The function $ C = 50 + 0.5y $ represents the cost $ C $ (in dollars) for $ y $ hours of service. Which of the following statements is true about function $ C $?

• Function $ C $ is not a linear function because the initial value is not zero.

• Function $ C $ is a linear function because the initial value is zero.

• Function $ C $ is not a linear function because the rate of change is not constant.

• Function $ C $ is linear because the rate of change is constant.

The graph shows the amount of water in a bathtub starting at 10:00. Select all true statements.

• The tub was filling faster at 10:14 than at 10:01.

• At 10:06, the tub was neither filling nor draining.

• The maximum amount of water in the tub was about 35 gallons.

• The amount of water in the tub stayed the same from 10:16 to 10:20.

• It took 4 minutes for the tub to drain.

Create an equation to represent the Tablet charging.

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Which of the following describes the "y" intercept of each Function?

• The y-intercept of Function A is 1 unit less than the y-intercept of Function B.

• The y-intercept of Function A is equal to the y-intercept of Function B.

• The y-intercept of Function A is 2 units less than the y-intercept of Function B.

• The y-intercept of Function A is 2 units greater than the y-intercept of Function B.

How long will it take if Kevin was to charge his phone to 100%?

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Select ALL statements that are FALSE.

• Marsha has the greatest initial value.

• Miya's monthly savings rate is the greatest.

• Justin will be the first to have enough money to buy the bicycle.

• They all have the same amount of money saved after 4 months.

Determine which set of numbers form a Right Triangle

• 5, 12, 13

• 5, 24, 25

• 5, 11, 9

• 5, 8, 10

Decide which of the following points are on the graph of the function y = 3x - 1.

● (0,-1),(2,4),(2,5),(0.5,1). Explain how you know.

● Is this a linear function? Explain your reasoning.

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