The equation of a quadratic function represented by the graph is y=a(x-3)^2-1. what is the value of a?

When attempting to find the value of a variable, our first step is to isolate the variable. In this case, the variable is a. To do this, we must divide each side by factors that do not contain the variable. After completing this step, we quickly note that x and y will be on the same side of the equal sign: 

a =  +