SOLUTION: suppose y varies direct with x. write a direct variation equation that relates x and y if x = 4 and y =-2

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Question 949903: suppose y varies direct with x. write a direct variation equation that relates x and y if x = 4 and y =-2
Answer by MathLover1(20849) About Me  (Show Source):
You can put this solution on YOUR website!

if y varies direct with x, then y=kx
write a direct variation equation that relates x and y if x+=+4 and y+=-2:
we need to find constant k
y=kx .....plug in x+=+4 and y+=-2
-2=k%2A4
-2%2F4=k
k=-1%2F2
so, direct variation equation will be: y=-%281%2F2%29x