Question

What is the equation of the line of symmetry for the parabola represented by the equation y = −2x^2 − 16x − 27?

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

Answer 1

Answer: x=-4

Explanation:

You can find this algebraically by either solving for the y-value of the vertex or by adding the two zeros and dividing by two.

In this case: (-5.581, 0) and (-2.419)

-5.581 + -2.419

= -8

-8/2 = -4