Is the equation #y = -15x# a direct variation, if so what is the constant of variation?

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Answer 1 · 2015-04-09T01:22:58

Yes, the equation #y=-15x# is a direct variation, and -15 is the constant of variation.

In order to be a direct variation, the line must go through the origin (0,0), which this equation does. Also, the slope is the constant of variation.

If #x=0#

#y=-15*0#

#y=0#

Point=#(0,0)#.

graph{y=-15x [-10, 10, -5, 5]}