CPM Homework Help : CCA2 Problem 12-121

Write an equation for the curve shown below. Is it a function? Justify your answer.

Curved graph, opens up, with vertex at the point (3, comma 3), & additional points at (7, comma 5), & (negative 1, comma 5).

Hint:

What parent graph does this look similar to?
What would the equation be?
And how do you determine if something is a function?

Answer:

One possible answer is $y=\frac{1}{8}(x-3)^2+3$

Is this a function?