Review - Check In - Linear Equations - Application

Justin travels 600 miles in 12 hours. What is his rate of change or speed?

• 40 miles per hour

• 50 miles per hour

• 55 miles per hour

• 60 miles per hour

Find the rate of change for the cost and number of games represented in the graph.

The graph displays the total cost over time. Which statement best describes the relationship between cost and the amount of time?

• The more time you spend, the more it costs.

• The less time you spend, the more it costs.

• The more time you spend, the less it costs.

• The less time you spend, the less time you have.

The graph shows the cost of going to a theme park. Which statement is true?

• The cost per ticket is $20.

• The slope of the graph is zero.

• The graph has a positive rate of change.

• The graph has a negative rate of change.

• It is the amount they started with.

• It is the amount that still needs to be raised.

• It is the amount that is leftover.

• It is the amount they raise each week.

The price of apples went from $0.35 per lb to $0.85 per lb in five years. Find the rate of change of the price of apples.

• $0.05 per pound per year

• $0.10 per pound per year

• $0.15 per pound per year

• $0.20 per pound per year

Damien is going to charge an initial fee $15, plus an hourly rate. He knows he wants to charge a total of $50 to mow his neighbor's yard, and it will take him 2 hours to complete.

At the same rate, how much should he charge another customer for a 4 hour job?

• $85

• $17.50

• $70

• $75

Fabric costs $4 per yard. The equation y=4x relates the cost of fabric (y) and the number of yards purchased (x). Identify the unit rate in the equation.

• x

• 4x

• 4

• y

Josmel is tracking the progress of a tomato plant growth. Josmel starts the experiment with the tomato plant at 6 inches high. The plant grows 3 inches per day. The model for the plant growth "y" is given by: y=3x+6. What is the meaning of the y-intercept in this equation?

• the y-intercept is the starting date

• the y-intercept is 3 times greater than 6

• the y-intercept is the starting height of the plant

• the y-intercept is the largest height the plant can grow

There are 5 caterpillars in each tree, and there are 10 caterpillars on the ground. The table shows how the number of caterpillars, c, depends on the number of trees, t. Choose the equation which represents the rule.

• c = 5t + 5

• c = 10 − 5t

• c = 5t − 10

• c = 5t + 10