If a graph of the quadratic equation is given, how do you find the vertex?

Look for the lowest point of the curve

Step-by-step explanation:

The vertex is generally where two or more curves meet, so if you have a standard ax2+bx+c quadratic, it would be the lowest point of the graph.

The image below should point it out.

im pretty sure its

(8,15)

step-by-step explanation:

or

step-by-step explanation:

we need to solve for 'x' the following equation:  

we have that:

⇒

⇒ ⇒

factorizing, we get that:

  ⇒

then, the solutions are: or

nothing extraneous has been found!