Recognising and representing proportional relationships between quantities

Which of the following is not a proportion?

• $\frac{1}{2}\ =\ \frac{3}{6}$

• $\frac{4}{10}=\ \frac{16}{40}$

• $\frac{4}{5}=\frac{5}{6}$

• $\frac{9}{10}=\frac{18}{20}$

Are the following ratios proportional?

2:3 and 4:6

• Yes

• No

Does this table represent a proportional relationship?

• Yes
• No

Which ratios are proportional?

• 10/20  20/40
• 10/17  20/40
• 13/18   16/25
• 1/4        1/3

Are the following ratios proportional?

24 : 36 and 8 : 10

• Yes

• No

Does this table represent a proportional relationship? Yes or No?

The cost of popcorn is $2.50 for each bag.

• Proportional
• Nonproportional

Does this table represent a proportional relationship?

• Yes, all ratios reduce to the same unit rate.

• No, the ratios do not reduce to the same unit rate.

A proportion is..

• a number out of 100

• an equation of equivalent ratios

• a number that divides evenly into another number

Is this table proportional? Yes or No?