kenJen1DMSten
kenJen1DMSten kenJen1DMSten
  • 13-10-2016
  • Mathematics
contestada

If y =4when x= 10 find y when x=2

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s941332
s941332 s941332
  • 19-10-2016
Since y=4, when x=-2, plug it into the formula above, and you have
y=kx
4=k(-2) 

Solve for k, k=-2 

Now, y = -2x, so if x=30y=-2*30=-60. 
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