Quiz about 7th Grade Unit 3(Ratios, Rates, Constant of Proportionality

Question 1

There are 10 dimes, 8 quarters, and 5 nickels?  What is the ratio of dimes to nickels?

Accepted Answer

2 to 1

Answer

10 to 5

Answer

5 : 10

Answer

1 : 2

Question 2

There are 10 dimes, 8 quarters, and 5 nickels?  What is the ratio of nickels to dimes and quarters?

Accepted Answer

5 to 18

Answer

5 : 8

Answer

1 : 2

Answer

4 to 5

Question 3

Mr. Wright has 7 boys and 9 girls. What is the ratio of girls to boys?

Accepted Answer

9 to 7

Answer

7 to 9

Question 4

Which rate is equivalent to $9 per hour?

Accepted Answer

$27 in 3 hours

Answer

$28 in 4 hours

Answer

$33 in 3 hours

Question 5

My aunt paid $124 for 4 concert tickets.  What is the rate for 7 concert tickets?

Accepted Answer

$217

Answer

$210

Answer

$264

Answer

$224

Question 6

Which of the following is the correct formula for finding the constant of proportionality?

Accepted Answer

k = y/x

Answer

k = x/y

Answer

y = k/x

Answer

x = k/y

Question 7

The horizontal axis is the y-axis.

Accepted Answer

False

Answer

True

Question 8

The point (0, 0) is called the origin.

Accepted Answer

True

Answer

False

Question 9

The constant of proportionality is also the unit rate.

Accepted Answer

True

Answer

False

Question 10

The constant of proportionality for the graph above is 1.

Accepted Answer

False

Answer

True

Question 11

When we compare quantities, we compare them as _____ over ______.

Accepted Answer

y over x

Answer

x over y

Answer

rate over one

Answer

peanut butter over jelly

Question 12

Unit means...

Accepted Answer

one

Answer

two

Answer

three

Answer

four

Question 13

Write an equation for the proportional relationship in the table.

Accepted Answer

y=18.50x

Answer

y=18x

Answer

y=22.50x

Answer

y=22x

Question 14

Janet used 155 beads to create 5 necklaces.  What is the constant of proportionality?  (How many beads did she use to make each necklace?)

Accepted Answer

31

Answer

51

Answer

33

Question 15

Does this graph show a proportional relationship?

Accepted Answer

yes

Answer

no

Answer

you cannot tell

Question 16

A box of cereal cost $3.59 for 30 oz. How much is the unit rate per ounce? Round to the nearest cent.

Accepted Answer

12 cents

Answer

11 cents

Answer

13 cents

Answer

10 cents

Question 17

Hadley is driving to Colorado. She has been traveling for 4 hours, and she has driven 260 miles. Find her speed in miles per hour.

Accepted Answer

65

Answer

85

Answer

60

Answer

70

Question 18

Write and equation in the form of y=kx for a line that passes through the ordered pair (3,9).

Accepted Answer

y=3x

Answer

y=1/3X

Answer

y=6x

Answer

y=9x

Question 19

You spend $40 on 5 pounds of concrete. What is the unit rate in dollars per pound?

Accepted Answer

$8 per pound

Answer

$5 per pound

Answer

$35 per pound

Answer

0.125 pounds per dollar

Question 20

Brittney bought 13 peaches for $8.84. How much was each peach?

Accepted Answer

.68 cent

Answer

.71 cent

Answer

.65 cent

Answer

.74 cent

7th Grade Unit 3(Ratios, Rates, Constant of Proportionality

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