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  • 09-07-2019
  • Mathematics
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Find the axis of symmetry for this parabola:
y = -x2 - 2x - 5
Write your answer as an equation.
Enter the correct answer.

Respuesta :

jimrgrant1 jimrgrant1
  • 09-07-2019

Answer:

x = - 1

Step-by-step explanation:

The equation of the axis of symmetry for a parabola in standard form

y = ax² + bx + c : a ≠ 0 is found using

x = - [tex]\frac{b}{2a}[/tex]

y = - x² - 2x - 5 ← is in standard form

with a = - 1 and b = - 2, thus equation of axis of symmetry is

x = - [tex]\frac{-2}{-2}[/tex] = - 1

Equation of axis of symmetry is x = - 1

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