G
Guest
Guest
I am having trouble solving for x and y in two different equations.
1. Solve for x:
y = a(x-h)^2 + k
I get this: x = h+-sqrt{(y-k)/(a) + 2h}
2. Solve for y:
(x-h)^2 + (h-k)^2 = r^2
I get this:
y = (r^2 -(x+h)^2 - k^2)/(y-2k)
However, to solve for a variable means to isolate the variable on one side of the equation, right? How come there is a y alone on the left side and another y in the denominator on the right side of the equation?
I'm lost!
1. Solve for x:
y = a(x-h)^2 + k
I get this: x = h+-sqrt{(y-k)/(a) + 2h}
2. Solve for y:
(x-h)^2 + (h-k)^2 = r^2
I get this:
y = (r^2 -(x+h)^2 - k^2)/(y-2k)
However, to solve for a variable means to isolate the variable on one side of the equation, right? How come there is a y alone on the left side and another y in the denominator on the right side of the equation?
I'm lost!