Midterm Practice

What is the solution to the equation -6(3a + 4) = 3a - 3?

• -12

• -9

• -5

• -1

Which equation is a translation 3 units up of the graph of the equation y = 5x ?

• y = 2x

• y = 8x

• y = 5x - 3

• y = 5x + 3

The graph of the linear equation y = 3x is shifted 2 units up. Which equation correctly describes the graph of the new line?

• y = 5x

• y = 3(x + 2)

• y = 3x + 2

• y = 3x - 2

When graphed, which line will have the greatest rate of change?

• y = 5x

• y = 3x

• y = 0.3x

• y = 0.5x

Which line represents a proportional relationship?

• y1

• y2

• y3

• y4

Which statement is always true?

• A linear relationship is proportional.

• A linear relationship is non-proportional.

• A proportional relationship contains the point (0, 0).

• A non-proportional relationship has a constant rate of change.

Harry is making bouquets of balloons. He makes the bouquets so that 2 out of every 5 balloons are red. Which equation correctly compares the number of balloons he uses, x, to the number of red balloons, y?

• y = 2/3x

• y = 2/5x

• y = 3/2x

• y = 5/2x

Geoff is training for a charity bike ride. He takes a ride on the 49-Mile Scenic Drive in San Francisco. The table shows his time at the beginning and end of the ride. What is Geoff’s average speed for the ride?

• 12.25 miles per hour

• 14 miles per hour

• 45.5 miles per hour

• 13 miles per hour

The set of ordered pairs shown represents a function, f. {(-5, 3), (4, 9), (3, -2), (0, 6)} Select the THREE ordered pairs that could be added to the set so that f remains a function.

• (0, -1)

• (4, 0)

• (2, 3)

• (1, 6)

• (-3, -2)

Isabelle went hiking. She climbed part way up a mountain and stopped to have lunch. Then she climbed to the top. She took several photos and watched the birds for a while. Then she climbed down. Which graph could represent Isabelle’s climb?

• A

• B

• C

• D