Answer:
6
Step-by-step explanation:
This line is in the form y = mx + b, where the letter m for some reason represents slope. The number 6 is in the m position, so the slope of the line is 6
Check the picture below.
(2, -4).
x^2 - 4x
= (x - 2)^2 - 4.
So the vertex is at
