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 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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