janjan687 janjan687

14-07-2018
Mathematics

contestada

Y varies directly as x if y=27 when x=3 find y when x is 2

Respuesta :

midknight9 midknight9

15-07-2018

We can set this up as a proportion and then solve for x directly:

[tex] \frac{27}{3} =\frac{y}{2} [/tex]

Then we cross multiply and divide by the coefficient of y:

[tex] 54=3y [/tex]

[tex] y=18 [/tex]

Now we know y = 18 when x =2.

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