Answer:
Step-by-step explanation:
175
C. Semiannual
6x-y+33=0
m=y2-y1/x1-x2
m=1-(-3)/18-(-6)
m=4/24m=6
m=y-y1/x-x1
6=y-y1/x-x1
12.55
Add them so its 12.55