SOLUTION: which of the following equations is a direct variation? A. y=2x B. y=x+2 C. y=2 D. y=-2x-1

Algebra ->  Test -> SOLUTION: which of the following equations is a direct variation? A. y=2x B. y=x+2 C. y=2 D. y=-2x-1      Log On


   

Question 757551: which of the following equations is a direct variation?
A. y=2x
B. y=x+2
C. y=2
D. y=-2x-1
Answer by reviewermath(1029) About Me  (Show Source):
You can put this solution on YOUR website!
Q:
which of the following equations is a direct variation?
A. y=2x
B. y=x+2
C. y=2
D. y=-2x-1
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A:
If y varies directly as x, then y = kx, where k is a non-zero constant.
Option highlight%28A%29 y =2x is a direct variation.