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daiffrig13 daiffrig13
  • 03-01-2016
  • Mathematics
Answered

y varies directly as x, and y=7 when x=4, find y when x=12

Verified Answer :

Anonymous Anonymous
  • 03-01-2016

Since y varies with x, the same we do to y, applies to x. 

x = 4  y=7

x= 43 = 12
x= 73 = 21

Therefore, x = 21

Final answer:  x=21    and   y= 12

Answer Link
Anonymous Anonymous
  • 03-01-2016

♥ Lets gather the information we know:
\(x = 4 y=7\)
♥ Now lets multiply and solve:
if x= 43 and 43 is 12
if x= 73 and 73 is  21
♥ And since 7*3=21, our answer is 21

Answer Link

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