Answer:
6
Step-by-step explanation:
12*2=24 24/4=6
vertex is (-4,-6)
put x+4=0
x=-4
when x=-4
f(x)=-6
y= 8.5x - 10
I think it is substracting because it's how much remains, if its wrong it could either be 10x - 8.5 or 8.5x + 10
