albwil9806 albwil9806
  • 01-07-2018
  • Mathematics
contestada

Is y=-3x a direct variation

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jimthompson5910 jimthompson5910
  • 01-07-2018
Yes it is a direct variation because it is in the form y = k*x. In this case, k = -3

The graph is a straight line through (0,0) and (1,-3). The fact that this is a straight line going through the origin (0,0) is a visual way to determine that it's a direct variation equation.
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puppies22
puppies22 puppies22
  • 01-07-2018
Hey!
Yes it is. The formula for a direct variation question is y = kx
k = -3
Also direct variations always go through the origin which is (0, 0), so you can always graph and check!
Hope this helps!
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