Rewrite the equation in vertex form. Name the vertex and y-intercept.

y = x^2 – 10x + 15



y = (x – 10)^2 –10

vertex: (–10, –10)

y-intercept: (0, –10)


y = (x – 5)^2 – 10

vertex: (5, –10)

y-intercept: (0, 15)


y = (x – 5)^2 + 40

vertex: (5, –10)

y-intercept: (0, 15)


y = (x – 10)^2 + 20

vertex: (–10, –10)

y-intercept: (0, –10)