Answer:
-15
Step-by-step explanation:
Answer:

Step-by-step explanation:
When you not given the vertex form, the you are given the standard form:

The value of k, is the y-value of the vertex of the function.
To find the value of k, you plug in

In order works, you evaluate

This will give you the k-value
(-2, -1)
(3, 2)
formula:
y2 - y1
———-
x2 - x1
2 - - 1 3
——- = —
3 - - 2 5