Answer:
x = -
Explanation:
Given a parabola in standard form
f(x) = ax² + bx + c ( a ≠ 0 )
Then the equation of the axis of symmetry is
x = -
f(x) = 8x² + 6x + 19 ← is in standard form
with a = 8 and b = 6 , then equation of axis of symmetry is
x = -
= -