solve each question for X , y=-9+x^2
y = -9 + x^2y + 9 = -9 + 9 + x^2y + 9 = x^2√y+9 = √x^2√y+9 = xx = √y+9√ is the square root symbol
so basically you want to isolate only one of the variable on one side so y=-9+x^2add 9 to both sidesy+9=x^2square root both sides\(\sqrt{y+9}=x\)x=\(\sqrt{y+9}\)
