Factor the quadratic expression in the equation y = 2x2 + 8x - 154 and find the zeros of the equation. Then use the zeros to find the line of symmetry of the parabola represented by the equation.

What is the equation for the line of symmetry of the parabola represented by the equation
y = 262 + 8x - 154?

Enter your answer as the correct equation like this: x = 42

zeros: -11 , 7

Line of symmetry: x = -2

Step-by-step explanation:

y = 2x² + 8x - 154 = 2*(x² + 4x - 77) = 2*(x+11)(x-7)

y = 0

x = - 11 or x = 7

line of symmetry: x = 1/2 (-11 + 7) = -2

2x² + 8x - 154 = 2*(x² + 4x +4) - 162 = 2 * (x+2)² - 162

vertex (h , k): h = -2 , k = -162

Line of symmetry: x = -2

i believe your answer is 99.7% of 7-year-old children are between 46.6 inches and 49.5 inches tall.

the answer is 1030 it's very simple math.