## Algebra 1: Common Core (15th Edition)

$a = 1, b = 6, \space \text{and} \space c = 0.$ a is represented by a Positive coefficient, so the graph opens upward. Use the axis of symmetry formula,$-b/2a$ to find the axis of symmetry. $$-(6)/2(1)\\ -6/2\\ -3$$ After solving, we find that our axis of symmetry is x = -3. These characteristics best represent answer choice A.