Question

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

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