Direct Proportion Review

In a certain apartment building, the ratio of tenants to cars is 3:5. If there are 30 tenants, how many cars are there?

• 35

• 18

• 60

• 50

Solve the proportion

• 4

• 6

• 9

• 44

What is the formula for the mass (m), in grams, of n sheets of paper ?

• m = 5 n

• m = 200 n

• n = 5 m

• n = 200 m

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)

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• 
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What kind of proportion describes in the problem:

Julie can pile 20 cases of soft drink bottles in 5 hours. If she works 8 hours a day, how many cases of soft drink bottles will she be able to collect in a day?

• Direct Proportion

• Inverse Proportion

• Partitive Proportion

Determine whether each pair of ratios forms a proportion

• Proportion

• Not a proportion

Every 30 seconds, you can text 35 words. How many words can you type in 5 mins?

(Direct Proportion)