Question

Question 1
What is the axis of symmetry to the following:
f(x) = x² + 2x – 8

Answer 1

Answer: x = -1

Step-by-step explanation:

Answer 2

Answer:

x = - 1

Step-by-step explanation:

Given a parabola in standard form , f(x) = ax² + bx +c ( a ≠ 0 )

Then the axis of symmetry is calculated using

x = - $\frac{b}{2a}$

f(x) = x² + 2x - 8 ← is in standard form

with a = 1 and b = 2 , then axis of symmetry is

x = - $\frac{2}{2}$ = - 1, that is

x = - 1