Is y=3x a direct variation and if so what is the constant?

2 Answers
Alan P.
Dec 3, 2017

Yes; the constant of variation is color(magenta)3

Explanation:

Given y=color(magenta)3x
If you multiply the value of x by color(blue)k (for any value of x)
then the value of y is multiplied by a factor of color(magenta)3color(blue)k

Jim G.
Dec 3, 2017

k=3

Explanation:

"a direct variation equation has the form"

•color(white)(x)y=kxlarrcolor(blue)"k is the constant of variation"

y=3x" is in this form hence direct variation equation"

rArrk=3

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