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X^2+2x-8
fine vertical line of symmetry

User Sarah G
by
6.5k points

1 Answer

2 votes

Answer:

x = - 1

Explanation:

given a parabola in standard form

ax² + bx + c ( a ≠ 0 )

then the vertical axis of symmetry is

x = -
(b)/(2a)

x² + 2x - 8 ← is in standard form

with a = 1, b = 2 , then

x = -
(2)/(2) = - 1

equation of axis of symmetry is x = - 1

User Jshock
by
7.4k points