Unit 2 Review

Are the following ratios proportional?
3/4, 36/40

• yes
• no

What does k represent in the equation y = kx?

• constant for preparation
• constant of proportionality
• kangaroos
• krispy kreme

Is this graph proportional?

• Yes
• No

Find the unit rate:  $3.60 for 3 pounds of apples. How much does it cost for 1 pound of apples?

• $1.00 per pound
• $3.60 per pound
• $1.20 per pound
• $1.10 per pound

Is this table proportional?

• Yes
• No

Jasmin is baking a cake that calls for 1/4 cup water for every 1/2 cup of flour. How much flour will she need if she uses 1.5 cups of water?

• 4 cups of flour
• .75 cups of flour
• 3 cups of flour
• .25 cups of flour

Daniel walked 2/5 mile in 1/4 hour. How fast did he walk, in miles per hour?

• 1.25 miles per hour
• 1/10 miles per hour
• 1.6 miles per hour
• 2 miles per hour

What is the unit rate in this proportional relationship?

• 60 miles/1 hour
• 120 miles/ 2 hours
• 1 mile/ 1 hour

Does this equation represent a proportional relationship?

• Yes
• No

Is the given table a proportional relationship? If so, write an equation that relates y to x.

• Yes;  y=1/3x
• Yes;  y=3x
• Yes;  y=5x 
• No