When transferring a formula from vertex form into standard form, or trying to graph the parabola, the toughest part is finding A. Y=a(x-2)^2+8 Step 1:Remove the Parenthesis. Since we don't know X, we just put 0, however the Y, you enter the Y intercept(there can only be one) 0=a(0-4)+8 Step 2:Solve the equation in the Parenthesis 0=-4a+8 Step 3:Move the K to the other side -8=4a Step 4:Isolate the variable(A). -2=a

In slope, thats considered y = x²