"DIRECT VARIATION Write an equation where y varies directly as x 1.) y=400 when x=25 2.) y=63 when x=81 3.) y=200 when x=300 In each of th

"DIRECT VARIATION Write an equation where y varies directly as x 1.) y=400 when x=25 2.) y=63 when x=81 3.) y=200 when x=300 In each of the FF. y varies directly as x find the values as indicated 1.) if y=-18 when x =9 find y when x=7 2) if y=-3 when x=-4 find x when y=2"