If y varies directly with x and
y = 48 when x = 6, find y if x = 3.
First, find the direct variation equation.
y = [? ]x

Question

If y varies directly with x and  y = 48 when x = 6, find y if x = 3.  First, find the direct variation equation.  y = [? ]x

linhdan · Answer

so this is direct proportional question  so y=(k)x  sub y=48 and x=6 48=6k k=8 now you got a constant k  now sub x=3  y=(8)(3) =24