SOLUTION: If y varies directly with x, and y = 72 when x = 6, find the constant of variation k.

Algebra ->  Coordinate-system -> SOLUTION: If y varies directly with x, and y = 72 when x = 6, find the constant of variation k.      Log On


   

Question 110427: If y varies directly with x, and y = 72 when x = 6, find the constant of variation k.
Answer by jim_thompson5910(35256) About Me  (Show Source):
You can put this solution on YOUR website!
Solved by pluggable solver: y varies directly as x----SOLVER TYPE!
Let k=constant of proportionality
Then,

y=kx

If y=72 when x=6,
72=%286%29%2Ak
k=+12