Interpreting Linear Tables and Graphs

What is the rate of change for the following graph?

• 80

• 20

• 40

• 160

What is the correct equation for the graph?

• y = x + 5

• x = y

• y = 5x

• x = 5y

The table shows the relationship between y, the cost to rent a boat, and x, the amount of time the boat is rented. Which graph best represents the relationship between x and y shown in the table? (7.7A)

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You are visiting Houston, Texas and a taxi cab company charges a flat rate of $4.00 for using the cab and $0.95 per mile.  Write an equation to determine the cost when x miles is driven.

• y = .75x

• y = .95x

• y = .95x + 4

• y=4.95x

Jack wants to save up money to buy his math teacher a new calculator for the holidays.

He saves $12 per week. He started off with $30 in his savings. What would be the linear equation to represent this situation?

• y=12x

• y=12x+30

• y=42x

• y=30x+12

What does the slope mean in this situation?

• Each pass after the initial pass costs $3.

• Each pass after the initial pass costs $12.

• Each pass after the initial pass costs $6.

• The passes are all free.

What does the y-intercept mean in this situation?

• The vehicle started with 0 gallons in the tank.

• The vehicle started with 50 gallons in the tank.

• It represent that they have driven 15 miles.

• The vehicle started with 15 gallons in the tank.

What is the y-intercept?

• 2

• 12

• 6

• 0

What does the y-intercept mean in this situation?

• The starting price of the pool pass is $0.

• The starting price of the pool pass is $12

• You can buy 6 passes.

• The starting prices of the pool pass is $6.

What is the y-intercept?

• 0

• 2

• 4

• 6