NAME _____________________________________________ DATE ____________________________ PERIOD _____________
Lesson 4 Additional Homework Practice - Direct Variation
Determine if the relationship between the two quantities is a direct variation. If it is, find the Constant of
Variation. If not, prove there is no Constant of Variation.
1.
2.
4.
3.
5.
Pints
Cups
x
y
1
2
2
4
3
6
4
8
6.
Width (ft)
Height (in.)
x
y
5
10
8
14
10
22
12
30
Determine if the relationship between the two quantities is a direct variation. If it is, find the Constant of
Variation. If not, prove there is no Constant of Variation.
7.
8.
x
3
6
9
12
x
2
4
6
8
y
120
90
60
30
y
–5
–10
–15
–20
Determine if the relationship between the two quantities is a direct variation. If it is, find the Constant of
Variation. If not, prove there is no Constant of Variation. YOU NEED TO PICK POINTS!!!
9.
y = -x – 5
10.
y= - x+2
11.
y = -6x
12. The equation y = 9.50x represents the number of dollars y Marty paid for x movie tickets.
13. The equation y = 0.10x + 45 represents the cost y of a cell phone plan when x text messages are sent and received.