Topic 3 Review

Which graph represents a proportional relationship?

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Tags

CCSS.7.RP.A.2D

The graph shows the cost C in dollars of w pounds of blueberries, a proportional relationship. Select all the true statements.

• 1 pound of blueberries costs $2.75.

• 2.75 pounds of blueberries cost $1.

• 5 pounds of blueberries cost $15.50.

• 12 pounds of blueberries cost $33.

• The point (3, 9) is on the graph of the proportional relationship.

Tags

CCSS.7.RP.A.2D

When Mr. M. went to the food store, he bought 6 pieces of gum for $0.90.

Select both constants of proportionality.

• 0.15

• 6.666...

• 5.4

• 5.1

• 0.90

Tags

CCSS.7.RP.A.2B

When Mr. M. went to the food store, he bought 6 pieces of gum for $0.90.

What does k=6.666... mean?

• For every $6.666..., you get 1 piece of gum.

• For every 6.666... pieces of gum, the cost is $1.

• 6.666... ⋅gum = cost

• If you take the cost and divide it by 6.666.... you get gum.

Tags

CCSS.6.RP.A.3D

When Mr. M. went to the food store, he bought 6 pieces of gum for $0.90.

If c represents the total cost for p pieces of gum, identify the equation that relates p and c.

• $p=0.15c$

• $c=0.15p$

• $c=p+0.15$

• $c=\frac{p}{0.15}$

Tags

CCSS.6.EE.C.9

When Mr. M. went to the food store, he bought 6 pieces of gum for $0.90.

If this rate continues, what will be the cost for 23 pieces of gum?

• $3.45

• $153.33

• $16.33

• $4.00

Tags

CCSS.6.RP.A.3B

When Mr. M. went to the food store, he bought 6 pieces of gum for $0.90.

If this rate continues, how many pieces of gum will you be able to buy with $5.00?

• 33.333... pieces of gum

• 12 pieces of gum

• 0.75 pieces of gum

• 42 pieces of gum

Tags

CCSS.6.RP.A.3B

The two lines represent the amount of water, over time, in two tanks that are the same size. Which container is filling more quickly? Explain how you know.

• A, it fills more gal. in a certain number of min.

• B, it fills more gal. in a certain number of min.

• A, it takes more min. to fill a certain number of gal.

• B, it takes more min. to fill a certain number of gal.

Tags

CCSS.HSF.LE.B.5

The table shows the weights of apples at a grocery store.

How much will 2 apples weigh? What about 12 apples?

• 0.24 kg; 1.44 kg

• 0.24 kg; 0.144 kg

• 1.1 kg; 6.6 kg

• 0.12 kg; 0.72 kg

Tags

CCSS.4.MD.A.2

The equation  $F=\frac{9}{5}C+32$   relates temperature measured in degrees Celsius, C, to degrees Fahrenheit, F. 

Is this equation proportional? Why or why not?

• No, adding 32 makes the graph not pass through (0, 0)

• No, a variable cannot multiply by a fraction.

• Yes, the values consistently increase by 32.

• Yes, the c.o.p. is 9/5.

Tags

CCSS.8.EE.B.5