Question

Find the constant variation for the direct variation given 

10y=13x 

f(x)=4.5x

x + y = 0

Answer 1

$10y=13x\ \ \ /:10\\\\y=1.3x\\\\constant=1.3\\==================\\f(x)=4.5x\\\\constant=4.5\\==================\\x+y=0\\y=-x\\\\constant=-1$