Lesson 8 Quiz Review

The graph shows how the number of feet of water in a small pond changes as the pond is being filled. What is the slope of the line?

• -2

• -1/2

• 1/2

• 2

The graph shows how the number of feet of water in a small pond changes as the pond is being filled. What does the slope represent in this situation?

• The rate at which water is being added to the pond.

• The total volume of water in the pond.

• The initial amount of water in the pond.

• The time taken to fill the pond completely.

Rhoda pays for Internet access each month. The graph shows the relationship between the total amount she has paid and the amount of time, in months. How can Rhoda show that the slope of the line is constant? What does a constant slope mean?

• By showing that the rate of change is the same between any two points on the line, indicating a linear relationship.

• By demonstrating that the line curves upwards, indicating an increasing rate of change.

• By proving that the line is horizontal, indicating no change over time.

• By showing that the line is vertical, indicating an undefined slope.

The graph shows the costs of different amounts of two lotions. Lotion C is represented by line C. Lotion D is represented by line D. Decide if each statement about the costs of the lotions is true or false. The cost of lotion C is $0.50 per ounce.

• True

• False

The graph shows the costs of different amounts of two lotions. Lotion C is represented by line C. Lotion D is represented by line D. Lotion D costs $2.00 per ounce.

• True

• False

The graph shows the costs of different amounts of two lotions. Lotion C is represented by line C. Lotion D is represented by line D. Lotion C costs more per ounce than lotion D because the slope of line C is greater than the slope of Line D.

• True

• False

The graph shows the costs of different amounts of two lotions. Lotion C is represented by line C. Lotion D is represented by line D. An amount of Lotion D costs more than the same amount of Lotion C because for any amount on the x-axis, Lotion D has a greater cost than Lotion C.

• True

• False

How can Sandra use her graph to show that her rate in minutes per mile was constant?

• By ensuring the vertical line segments are of equal length

• By checking that the slope of the line is the same between any two points

• By making sure the line is parallel to the x-axis

• By verifying that the line passes through the origin