What equation would you write so that the vertex is at (-3,5) and the graph opens down? You can go back to experiment some more if you need to.

Answer 1

There is a quick trick using the vertex form:

y = a(x-h)² + k

1. (h,k) = vertex ( in this case -3,5)
2. x = axis = h (-3)
3. a = rate/slope
4. Positive number = opens up
5. Negative number = opens down
6. Example: -8 ( -3- (-3))² + 5