Algebra 1 Unit 3 Test Review

What is the slope of the linear function shown in the graph?

Coach Dunnells kept track of the number of wins at different points in his career. If Coach Dunnells continues to win at this rate, during which year will Coach Dunnells get the 112th win?

• 17

• 16

• 15

• 14

Juan completed a science experiment where he studied the growth of a flower over a number of days. The days after the flower was planted and the height of the flower in, millimeters, is shown in the table.

What information is provided by the slope of the linear equation that models the data?

• The flower ends up being 16 mm high.

• The flower starts out as a seed.

• The flower is shrinking at a rate of 2 mm per day.

• The flower is growing at a rate of 2 mm per day.

The Killeen Carnival charges a $10 admission fee and $2.50 for each ride.

Which equation can be used to determine c, the total cost of a day at the Killeen Carnival, based on n, the number of rides?

• c = 10n + 2.50

• c = 2.50n + 10

• n = 2.50c + 10

• n = 10c + 2.50

What is the slope of a line that passes through the points A (0, -5) and P (−4, 7)?

• -3

• 3

• -1/3

• 1/3

Jack recorded a temperature of 20 degrees Celsius after 2 minutes and 40 degrees Celsius after 10 minutes.

Which calculation could be used to determine the average rate of change between these two temperatures?

• Find the slope between (0, 0) and (10, 40)

• Subtract 20 from 40

• Find the slope between (2, 20) and (10, 40)

• Subtract 2 from 10

The variables x and y vary directly. When x = 36, y = 3. Which of the following equations represents this relationship?

The graph shows the decrease in the value of a washing machine over a period of 5 years.

What is the linear equation that is represented by the graph?

A plumber charges an initial fee to make a house call plus an hourly rate for any repair. The total charges for the house call and repair are shown in the table below.

Which equation represents the linear relationships between y, the total charges in dollars, and x, the number of hours the plumber worked?

A table of values for a linear function is shown.

What is the slope of the line represented by the values in the table?