How do you determine the vertex for a equation?

A quadratic equation is written as   in its standard form. Use the formula for the x coordinate and then plug it in to find the y.

Step-by-step explanation:

1) For example, let's suppose our problem is to find out vertex (x,y) of the quadratic equation  

2) Assess your a, b and c values. In this example, a=1, b=2 and c=-3

3) Plug in your values into the formula. For this example, you'll get which simplifies to -1

4) plug -1 for x in the equation to find the y-value of the vertex and you're good

5)  Your final answer is (-1 ,-4)!