 Direct, Inverse, & Joint Variation
3 years ago
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Practice 16 QuestionsShow answers
• Question 1
60 seconds Q.
direct variation
inverse variation
neither direct nor inverse variation
• Question 2
60 seconds Q.
direct variation
inverse variation
neither direct nor inverse variation
• Question 3
60 seconds Q.
direct variation
inverse variation
neither direct nor inverse variation
• Question 4
120 seconds
Q. The equation
w = 10chs  represents:
direct variation
inverse variation
joint variation
none of these
• Question 5
120 seconds
Q. The equation
xy =  25  represents:
direct variation
inverse variation
joint variation
none of these
• Question 6
120 seconds Q.
direct variation
inverse variation
joint variation
none of these
• Question 7
120 seconds Q.
direct variation
inverse variation
joint variation
none of these
• Question 8
120 seconds Q.
direct variation
inverse variation
joint variation
none of these
• Question 9
120 seconds Q.
direct variation
inverse variation
joint variation
none of these
• Question 10
120 seconds
Q. What type of variation does this scenario represent?
The length of time you charge your cell phone
and the battery power
direct variation
inverse variation
joint variation
none of these
• Question 11
120 seconds
Q. What type of variation does this scenario represent?
The outside temperature
and the number of layers of clothes you need to wear outside to feel comfortable
direct variation
inverse variation
joint variation
none of these
• Question 12
120 seconds
Q. What type of variation does this scenario represent?
The grade you earn in a class
and the number of assignments you complete
and the number of hours you study
direct variation
inverse variation
joint variation
none of these
• Question 13
120 seconds
Q. What type of variation does this scenario represent?
You and some friends decide to buy 2 pizzas and split the cost evenly.
The number of friends who are sharing the cost of the pizzas
and the amount of money you pay for your share.
direct variation
inverse variation
joint variation
none of these
• Question 14
300 seconds
Q. Suppose y varies directly as x.
If  y = 22.5 when x = 15, find y when x = 20.
1.5
337.5
30
16.875
• Question 15
300 seconds
Q. Suppose y varies jointly as x & z.
If y = -180 when z = 15
and x = -3,
then find y when x = 7 and z = -5.
-140
140
-4
4
• Question 16
300 seconds
Q. Suppose y varies inversely with x.
If y = 150 when x = 2, find y when x = 25.