the work

I.When you are given a point (x, y) and a vertex (h, k)

• y = a(x - h)^2 + k
• plug the point in for x and y, plug in h and k, solve for a
• plug a, h, and k into the stander form of a parabola

II. When you are given the x intercepts p and q and a point (x,y)

• y = a(x-p)(x-q)
• then plug in the y at the end and then a(x-p)(x-q) and its = to y
• solve for a
• supsto a, p and q into the equation

III. Given three points

• y=ax^2+bx+c
• you plug in a,b and c then when u solve for them you well get your answer for your problem.
• Then your a,b and c well have there number so then you well be right