Please show the answer with the work, GodBless.

0if x and y vary inversely and y=6 as x=7, what is the constant of variation?

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Which equation shows the variable terms isolated on one side and the constant terms isolated on the other side for the equation -1/2x+3=4-1/4x? a. -1/4x=1 b. -3/4x=1 c. 7=1/4x d. 7=3/4x