Direct Proportion Graphing

• 40

• 4

• 400

• 80

Which graph shows a direct proportion ?

• Graph of taxi A

• Graph of taxi B

A book prices $2 each.

Which graph show the price of book (y-coordinate) and the number of book (x-coordinate)

• 
• 
• 

A book prices $2 each.

If you make a graph price for each book.

What is the gradient of your graph?

• 1

• 2

• 3

What is the constant of proportionality?

• 8

• 2

• 3

• 125

• 5

• 25

• 100

• 48

• 3

• 144

• 100

Which of the given graphs is a direct proportion?

• A

• B

• C

• D

The distance that an automobile travels varies directly as the time it travels. If the car travels 280 miles in 7 hours, how far will it travel in 12 hours?

• 480

• 1960

• 84

• 25

Which equation represents the following graph?

• y = 3x + 2

• y = -2x + 3

• y = 2x + 3

• y = -3x + 2