Question

What is the line of semmetry for the parabola whose equation is y =x^2 +10x=25

Answer 1

x = -5

Explanation:

The equation y = x^2+10x+25 can be factored to (x+5)^2

when (x+5)^2 = 0

x = -5

meaning the equation has a line of symmetry at x = -5