Answer:
y=-1/2x-9
Step-by-step explanation:
First, solve for the slope, m.
m= y2-y2/x2-x1
m= -13-(-7)/8-(-4)
m= -6/12
m= -1/2
Plug in the slope into the formula y=mx+b.
y= -1/2x + b
-7= -1/2(-4) + b
-7= 2 + b
(subtract 2 from both sides)
-7-2 = b
-9 = b
FINAL ANSWER:
y=-1/2x+-9
y=-1/2x - 9
