find the vertex and intercepts of the folowing quadratics. use this information to graph the quadratic.
1. y=x^2-2x-8
2.y=2x^2-12x+10
3.y=-2x^2+12x-18
write each function in vertex form
1.y=x^2+4x
2.y=-x^2+4x+4
3.y=2x^2-6