If y varies directly as x, and y=-4 when x=8, find y when x=3

Value of y when x is 3 = - 1.5

Explanation:

Given:

y = -4 when x = 8

Find:

Value of y when x = 3

Computation:

y1 / x1 = y2 / x2

So,

-4 / 8 = y / 3

y = -12 / 8

y = -1.5

Value of y when x is 3 = - 1.5

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