Direct Variation Quiz Answer Key
𝑦=4
𝑥
1. The linear equation:
is considered a direct variation.
a)𝑇𝑟𝑢𝑒
b)𝐹𝑎𝑙𝑠𝑒
2. In any direct variation, an ordered pair (0,0) is always part of
the solution.
a)𝑇𝑟𝑢𝑒
b)𝐹𝑎𝑙𝑠𝑒
3.
Which of the following graphs is an example of
direct variation?
a)
b)
c)
d)
4. This linear equation:
variation.
𝑦=1
4𝑥 + 9
can be an example of direct
a) 𝑇𝑟𝑢𝑒
b) 𝐹𝑎𝑙𝑠𝑒
5. This linear equation: 𝑦 =‒ 0.2𝑥 can be an example of direct variation.
a) 𝑇𝑟𝑢𝑒
b) 𝐹𝑎𝑙𝑠𝑒
1
6. Which of the following linear equations can be an example of direct
variation?
a)
𝑦=1
3𝑥 ‒ 4
2
b) 𝑦 = 𝑥
c) 𝑦 =‒ 2.2𝑥
d)
𝑦=5
𝑥
7. The direct variation can be represented in this form:
is the constant of proportionality.
𝑦=𝑘
𝑥,
where k
a) 𝑇𝑟𝑢𝑒
b) 𝐹𝑎𝑙𝑠𝑒
8. The value of the y-intercept can be any other value except zero in
direct variation.
a) 𝑇𝑟𝑢𝑒
b) 𝐹𝑎𝑙𝑠𝑒
9. Which of the following direct variations matches the line in the
graph below?
a) 𝑦 = 2𝑥
b)
𝑦=2
3𝑥
c) 𝑦 = 4𝑥
d)
𝑦=4
5𝑥
10. Determine the correct direct variation that
matches the line in the graph below.
2
a)
𝑦=1
4𝑥
b) 𝑦 = 2𝑥 + 1
c) 𝑦 = 3𝑥
d) None of the above
3