You can complete the square to find the vertex or use the formula
which gives you your x coordinate and then just plug it in to the equation to find your y coordinate.
Is there possibly an easy way to remember how to find a vertex for a quadratic function? i am doing homework online and just keep getting these questions wrong...I cannot seem to understand how to apply finding the vertex to different quad functions. i understand it after the fact, but when a new one pops up that looks different i still don't know what to do...