Quiz about Midterm Practice

Question 1

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

Accepted Answer

-1

Answer

-12

Answer

-9

Answer

-5

Question 2

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

Accepted Answer

y = 5x + 3

Answer

y = 2x

Answer

y = 8x

Answer

y = 5x - 3

Question 3

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

Accepted Answer

y = 3x + 2

Answer

y = 5x

Answer

y = 3(x + 2)

Answer

y = 3x - 2

Question 4

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

Accepted Answer

y = 5x

Answer

y = 3x

Answer

y = 0.3x

Answer

y = 0.5x

Question 5

Which line represents a proportional relationship?

Accepted Answer

y3

Answer

y1

Answer

y2

Answer

y4

Question 6

Which statement is always true?

Accepted Answer

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

Answer

A linear relationship is proportional.

Answer

A linear relationship is non-proportional.

Answer

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

Question 7

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?

Accepted Answer

y = 2/5x

Answer

y = 2/3x

Answer

y = 3/2x

Answer

y = 5/2x

Question 8

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.

Accepted Answer

(2, 3)

Accepted Answer

(1, 6)

Accepted Answer

(-3, -2)

Answer

(0, -1)

Answer

(4, 0)

Question 9

Which set of ordered pairs does NOT represent a function? Select the THREE that apply.

Accepted Answer

{(0, 1), (0, 2), (0, 3), (0, 4)}

Accepted Answer

{(3, 5), (4, -1), (2, -1), (2, 7), (-3, 6)}

Accepted Answer

{(9, -3), (4, -2), (1, -1), (0, 0), (1, 1), (4, 2), (9, 3)}

Answer

{(1, 1), (4, 2), (9, 3), (16, 4), (25, 5)}

Answer

{(-3, 9), (-2, 4), (-1, 1), (0, 0), (1, 1), (2, 4), (3, 9)}

Question 10

Choose whether the following graph represents a linear function or a nonlinear function.

Accepted Answer

Nonlinear

Answer

Linear

Question 11

Does this set of ordered pairs represent a function? Explain why it is or is not a function. {(1, 7), (1, 6), (1, 5), (1, 4), (1, 3)}

Accepted Answer

This set is not a function because the input 1 has five outputs, 7, 6, 5, 4, and 3.

Answer

This sequence is not a function because each input maps to exactly one output.

Answer

This sequence is a function because each input maps to exactly one output.

Answer

This sequence is a function because each output maps to exactly one input.

Question 12

Which best describes the following graph? Select the FOUR that apply.

Accepted Answer

Continuous

Accepted Answer

Increasing

Accepted Answer

Nonlinear

Accepted Answer

Decreasing

Answer

Linear

Question 13

What is the domain of the function shown?

Accepted Answer

2, 4, 6, 8

Answer

all numbers between and including 2 and 8

Answer

all numbers between and including 7 and 10

Answer

7, 8, 9, 10

Question 14

A line of fit is shown on the graph. Does this line accurately approximate the data? Why or why not?

Accepted Answer

Yes, because it is as close to as many points from the data set as possible

Answer

Yes, because it includes two points from the data set

Answer

No, because it does not include enough points from the data set

Answer

No, because it has one data point from the set that is very far from the line

Question 15

The graph shows Lorena's data and the line she drew to represent the relationship between the height, y, of her tomato plant and the time, x, in months, from when she began measuring its growth. What does the slope of the line Lorena drew represent?

Accepted Answer

The tomato plant grew at a rate of 2 inches per month.

Answer

The initial height of the tomato plant was 2 inches.

Answer

The initial height of the tomato plant was 8 inches.

Answer

The tomato plant grew at a rate of 8 inches per month.

Question 16

Which of the following equations is in slope-intercept form?

Accepted Answer

y = 3x + 5

Answer

2x + 3y - 6 = 0

Answer

3x + 4y = 12

Answer

y - 2 = 3(x - 1)

Question 17

Max bought some e-books for $8.99 each and some magazines for $3.99 each. If e represents the numbers of e-books and m represents the number of magazines, which equations describes the relationship between the two variables if he spent a total of $68.89 on these items?

Accepted Answer

8.99e + 3.99m = 68.89

Answer

3.99e + 8.99m = 68.89

Question 18

The equation y + 3 = 5(x-3) represents a linear function. What is the y-intercept of the equations?

Accepted Answer

(o,-18)

Answer

(0,36)

Answer

(0,5)

Answer

(0,-72)

Question 19

What characteristic of a graph indicates that it does not represent a function?

Accepted Answer

It fails the vertical line test

Answer

It passes the vertical line test

Answer

It has a constant slope

Answer

It is a straight line

Question 20

Which of the following graphs represents a discrete function?

Accepted Answer

A graph with distinct, unconnected points

Answer

A graph with a straight line

Answer

A graph with a continuous line

Answer

A graph with a curve

Question 21

How can you identify a nonlinear graph?

Accepted Answer

It has a curve or varying slope

Answer

It passes through the origin

Answer

It has a constant slope

Answer

It forms a straight line

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