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Suppose y varies directly as X, and Y equals 16 when x equals 8 find y when x equal 16

User Wronex
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y = 16 \\ x = 8 \\ x = 8 * 2 = 16 \\ y = 16 * 2 = 32
so when x(8) equals 16 it would mean 8 is multiplied by 2 and so once x(8) is multiplied by 2 y(16) would also have to be multiplied by 2 which is 32
so y =32 I'm sorry if I'm wrong
User Keyboard
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7.7k points
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when

y = x \\ y = 16 \\ x = 8
you would have to use comon multiples to find what both numbers have in common, a short way of finding this would be

16 / 8 = a
where (a) is the answer of the equation, (a) would be 2 because 8*2=16 meaning

y = 2x
User Ndonohoe
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