What is the axis of symmetry and vertex for the graph $y = 3x² + 6x + 2$ ?

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Answer 1 · 2016-03-15T00:06:08

Vertex (-1, -1)

x-coordinate of vertex, and of the axis of symmetry:
$x = -b/(2a) = - 6/6 = -1$
y-coordinate of vertex:
y(-1) = 3 - 6 + 2 = -1.
Vertex (-1, -1)

What is the axis of symmetry and vertex for the graph y = 3x² + 6x + 2y = 3x² + 6x + 2?