Linear Functions Using Graphs, Tables, and Equations

What is the equation of the line?

• y = 20x

• y = x + 20

• y = 2x

• y = x + 2

A driving range charges $4 to rent a golf club plus $2.75 for every bucket of golf balls you hit. Write an equation that shows the total cost c of hitting b buckets of golf balls.

• c = 2.75b + 4

• c = 2.75b

• c =  4b- 2.75

• c = 2.75b - 4

You earn $18 for every hour you work. Which equation represents this function?

• y=(18/2)x + 0

• y = 18x

• y = 2x + 18

• y = 18x + 2

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

The number of trees and the number of apples are given in the table above.  Determine which statement below is correct.

• The table is not proportional because the unit rate is not constant.

• The table is proportional and the unit rate is 1/13

• The table is proportional and the unit rate is 13.

• The table is not proportional because it doesn't pass through the origin.

Write an equation from the graph using (p) for price and (w) for weight.

• p = 20w

• w = 20p

• p = 20p

• w = 20w

The money I have is represented by the equation: y = 10x + 100 where x = number of weeks and y = money remaining. How does my money CHANGE each week?

• increases by $10 each week

• decreases by $10 each week

• increases by $100 each week

• decreases by $100 each week

What is the rate of change for the following graph?

• 80

• 20

• 40

• 160

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

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)

• 
• 
• 
•