For each equation, determine whether it shows a direct variation (that is, shows directly proportional variables)....

Question

Question

math precalculus

Answer 1

Answer #1

1. Soln:- Here,

given equation is

-8x=5y+7

y=(-8x/5) -7/5 ------(1)

For direct variation we have:

y=kx where k is the constant of variation.

since the equation (1) not in form of y=kx ,

so dosesn't represent direct variation.

(2)Soln:-Here the given equation is,

2y=6x

y=3x ----(1)

For direct variation we have:

y=kx where k is the constant of variation.

since the equation (1) in form of y=kx ,

so it represent direct variation and constant is k=3

Answer 2

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