Find the equation of the axis of symmetry and the coordinates of the vertex of the graph of the function y = 4x2 + 5x – 1.

Vertex:

Axis of symmetry:

The function is given by the equation:

In general for any quadratic equation of the type:

The coordinate of the vertex is: (h,k)

where

and

and the equation of axis of symmetry is:

Here we have:

i.e.

and

Hence, the vertex is:

and the axis of symmetry is given by:

ca = ec

cpctc makes it so that corresponding parts of the triangle you proved to be equal are equal, the other options aren't part of the part of the triangles you proved to be equal.