Direct Proportion Applications

Which graph shows a direct proportion ?

• Graph of taxi A

• Graph of taxi B

What is a formula for the number of pages (p) that can be photocopied in m minutes ?

• p = 16 m

• m = 16 p

A book prices $2 each.

Work out the formula for the price of book (p) for b number of books.

• b = 2 p

• p = 2 b

• b = 0.5 p

• p = 0.5 b

A book prices $2 each.

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

• 
• 
• 

If you make a graph price for each book.

What is the gradient of your graph?

• 1

• 2

• 3

What type of proportion does the table represent?

• Direct

• Inverse

• I dont' know

Two slices of Dan’s Famous Pizza have 300

Calories. How many Calories would you expect to be in 6 slices of the same pizza?

• 30 calories

• 900 calories

• 1200 calories

• 460 calories

A cake recipe calls for 1.5 cups of milk and 3 cups of flour. Seth made a mistake and used 12 cups of flour. How many cups of milk should he use to keep the proportions correct?

• 6 cups milk

• 3 cups milk

• 5.5 cups milk

• 9 cups milk

How many stars can she fold in 3 h?

• 48

• 72

• 24

• 96

6 cats eat 1 kg of fish. How many kilograms of fish do you need to feed 18 cats?

• 18 kg

• 12 kg

• 6 kg

• 3 kg