01/31 Unit 5 PreAlg Reteach

Unit Rate

Fill in the Blanks

Johnny read 300 words in 6 minutes. At what rate, words per minute, is Jonny reading? ( Since you want words per minute, words goes on top and minutes goes on the bottom)

Unit Rate Intro

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Unit Rate Intro

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Multiple Choice

Are the ratios $$\frac{4}{1}$$  and  $$\frac{20}{5}$$   equivalent?

• No

• Yes

Multiple Choice

The ratio of girls to boys at basketball practice is 2:3. If there are 12 girls at practice then how many boys are there?

• 15

• 18

• 20

• 21

Multiple Choice

Alicia drove at a constant speed and traveled 182.4 miles in 3 hours. What is her rate in miles per hour?

• 60.8 miles per hour

• 547.2 miles per hour

• 56 miles per hour

Multiple Choice

The ratio of 6th graders to 7th graders at a basketball game is 4:1. If there are eight 7th graders, how many 6th graders are there?

• 28

• 16

• 8

• 32

Proportional Graphs?

Multiple Choice

Which graph is non-proportional?

• A
• B
• C
• D

Multiple Choice

Is the graph proportional or non proportional?

• proportional
• non proportional

Constant of Proportionality

Constant of Proportionality

Multiple Choice

Based on the graph, what is the constant of proportionality?

• 1

• 12

• 24

Multiple Choice

Identify the constant of proportionality.

• k = 6

• k = 12

• k = 1/6

• k = 1/12

• none (not proportional)

Multiple Choice

Identify the table as proportional or non-proportional.

• Proportional

• Non-Proportional

Multiple Choice

What is the constant of proportionality?

• 15
• 5
• 75
• 25

Equations

Match

Match each equation with it's correct constant of proportionality (k).

• $$a=3.22b$$

• $$c=\frac{1}{2}d$$

• $$e=2f$$

• $$g=\frac{h}{3}$$

• $$L=\frac{1}{3}m\ +2$$

Not proportional

• $$k=3.22$$

• $$k=\frac{1}{2}$$

• $$k=2$$

• $$k=\frac{1}{3}$$

• Not proportional

Multiple Choice

Does the equation $$y=3x\ -5$$ represent a proportional relationship?

• Yes, it is proportional

• No, it is not proportional

Multiple Choice

Does the equation $$s=\frac{1}{2}f$$ represent a proportional relationship?

• Yes, it is proportional

• No, it is not proportional

Fill in the Blanks

What is the constant of proportionality of the graph?

k=

Fill in the Blanks

What is the constant of proportionality of the graph?

k=

Fill in the Blanks

Based on the information in the table, what is the constant of proportionality?

Fill in the Blanks

Based on the information in the table, what is the constant of proportionality?

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