SOLUTION: Determine whether y varies directly as x, if yes find the variation y=-1.2x y-3x=1 y+2=x y=-3.5x+7

Algebra ->  Linear-equations -> SOLUTION: Determine whether y varies directly as x, if yes find the variation y=-1.2x y-3x=1 y+2=x y=-3.5x+7      Log On


   

Question 904785: Determine whether y varies directly as x, if yes find the variation
y=-1.2x
y-3x=1
y+2=x
y=-3.5x+7
Answer by jim_thompson5910(35256) About Me  (Show Source):
You can put this solution on YOUR website!
y=-1.2x is a direct variation equation since it is in the form y = kx. In this case, k = -1.2 (the constant of variation)

The other equations are NOT in the form y = k*x and cannot be written into that form. So they are NOT direct variation equations.