Question

What is the axis of symmetry and vertex for the graph `y=3x^2+5x-8`?

Answer 1

Vertex is at `(-5/6,-121/12)` Axis of symmetry is `x=-5/6`

Explanation:

`y=3x^2+5x-8 or y=3(x^2+5/3x)-8= 3(x^2+5/3x+25/36)-25/12-8 =3(x+5/6)^2 -121/12 :.`Vertex is at `(-5/6,-121/12)` Axis of symmetry is `x=-5/6` graph{3x^2+5x-8 [-40, 40, -20, 20]}[Ans]