NAME
DIRECT VARIATION
Quiz Form A
TEKS 8.5E
1 Vance’s distance from the trailhead varies directly with the time he has been walking down the trail, as
shown in the table below. What is Vance’s distance from the trailhead after 50 minutes?
minutes (x)
miles (y)
15
0.375
20
0.5
30
0.75
35
0.875
•
2 Frederick’s salary varies directly with the hours he works. Last week he earned $328.30 and worked
33.5 hours. If he works 35 hours this week, what will be his salary?
A $314.23
B $329.80
C $343.00
D $357.14
3 The amount of medication a dog needs varies directly with its weight as shown in the table below. How
many milligrams of medication are needed for a 27.5 pound dog?
Weight (lbs)
Medication (mg)
10
12
20
24
30
36
40
48
•
4 The number of math problems Phaedra has completed varies directly with the amount of time she has
been working on homework. She completed 8 in the first 6 minutes. How many will she have
completed after 27 minutes?
A 20
B 29
C 35
D 36
© 2014 Anna Strickland (Miss Anna Bee) Reproduction permitted for personal classroom use only.
5 Damian’s score in a video game varies directly with the number of keys he finds. When he had found 4
keys, his score was 1,400. When he has found all ten keys, what will his score be?
•
6 The price of a carnival ticket varies directly with the number of rides available. Funny Town Carnival
has 5 rides available and costs $7.25 per ticket. They will open two new rides this season. What will
the new ticket price be?
A $10.15
B $9.25
C $4.25
D $2.90
7 The height of a bean plant varies directly with the number of days that have passed since it sprouted.
A bean plant that sprouted 3 days ago is 1.92 cm tall. How tall will it be in one week?
A 4.48 cm
B 6.4 cm
C 7.68 cm
D 8.92 cm
8 The cost of a cell phone plan varies directly with the amount of data included. A 0.5 GB plan costs
$14.95 per month. How much does a 3 GB plan cost?
A $22.43
B $37.38
C $66.67
D $89.70
9 Charles’s pay varies directly with the number of words he writes for Two Cities Magazine. The first story
he wrote was 4,929 words and he was paid $345.03. How much will he be paid for his next story, which
is 3,825 words?
A $110.40
B $267.75
C $319.97
D $546.43
10 Scores on Mrs. Washington’s science test vary directly with the number of questions answered correctly,
as shown in the table. Bethany’s score was an 87.5. How many questions did she answer correctly?
Questions Correct
Score
4
25
8
50
12
75
16
100
•
© 2014 Anna Strickland (Miss Anna Bee) Reproduction permitted for personal classroom use only.
DIRECT VARIATION
Quiz Form A
1
2
3
4
5
6
7
8
9
10
TEKS 8.5E
1.25
C
33
D
3,500
A
B
D
B
14
© 2014 Anna Strickland (Miss Anna Bee) Reproduction permitted for personal classroom use only.