Answer:
WAIT
Step-by-step explanation:
Answer:
y stands for unknown number
Step-by-step explanation:

Actually Welcome to the Concept of the Straight lines.
Since the slope of the line, m = -1/2
and we know that, line equation is, y=mx+c
so the answer is, option 1.)
1.) y-4 = -1/2 (x+6)
AB and EF
BC and FD
AC and ED