if y varies direct as 8, and y is -60 when x is -5, find y when x is 3.

Question

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Assume y's direct function is either a multiplication or division; I chose the second one. So a trial shows y at -60 = x at (-5 + const 1) x const 2 all divided by 8. If const 1 is -43, then -5 + (-43) = -48 x const 2 divided by 8. This solves for -60, the value of y, so const 2 is 10. When you solve for x=3, the y = +3-43 or -50. Solving the equation for x=0, works out to y =~-54, which checks graphically.