SOLUTION: Y varies directly to x^2. If x is decreased by 200%, find the percentage decrease in y. My solution-- y=kx^2 1. X itself is 100% so if decrease by 200%, the new x will be

Question 1024627: Y varies directly to x^2. If x is decreased
by 200%, find the percentage decrease in y.

My solution-- y=kx^2
1. X itself is 100% so if decrease by 200%,
the new x will be x-x-x= -x
2. The new y = k (-x)^2------= kx^2
3. Percent decrease =. Kx^2- kx^2)/ kx^2
Step 3 made me confused if y= 0%
Answer by Alan3354(69443) (Show Source): You can put this solution on YOUR website!
Y varies directly to x^2. If x is decreased
by 200%, find the percentage decrease in y.

My solution-- y=kx^2
1. X itself is 100% so if decrease by 200%,
the new x will be x-x-x= -x
2. The new y = k (-x)^2------= kx^2
3. Percent decrease =. Kx^2- kx^2)/ kx^2
Step 3 made me confused if y= 0%
=================
It is zero. The value of y is the same at x and -x.
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