Answer:
The vertex is (0, -7)
Step-by-step explanation:
In order to find the vertex of this equation, we start with the base equation.
f(x)= a|x - h| + k
Now we find the vertex at (h, k). Since there is no number after x, we assume h to be 0. k lines up with -7. This gives us the vertex of (0, -7)