Question

Please answer!!!!!!!

Answer 1

You can add 2by² - x to get
  2by² = a - x
Then divide by the coefficient of y²
  y² = (a - x)/(2b)

Now take the square root.
  y = √((a - x)/(2b))

This can be "simplified" to
  y = (√(2b(a - x)))/(2b)