9x^2-y^2=0

Solution for 9x^2-y^2=0 equation:

Simplifying
9x2 + -1y2 = 0

Solving
9x2 + -1y2 = 0

Solving for variable 'x'.

Move all terms containing x to the left, all other terms to the right.

Add 'y2' to each side of the equation.
9x2 + -1y2 + y2 = 0 + y2

Combine like terms: -1y2 + y2 = 0
9x2 + 0 = 0 + y2
9x2 = 0 + y2
Remove the zero:
9x2 = y2

Divide each side by '9'.
x2 = 0.1111111111y2

Simplifying
x2 = 0.1111111111y2

Take the square root of each side:
x = {-0.333333333y, 0.333333333y}