Answer: y=-1/2x+11/2
Explanation:
equation of line is y=mx+b
m=y2-y1/x2-x1
m=2-9/7-(-7)
m=-7/14
m=-1/2
y=-1/2x+b
You can use either (x,y) point you want, the answer will be the same
(-7,9)
y=mx+b or 9=-1/2 × -7+b, or solving for b: b=9-(-1/2)(-7). b=11/2.
(7,2)
y=mx+b or 2=-1/2 × 7+b, or solving for b: b=2-(-1/2)(7). b=11/2.
so then you just put it all together
y=-1/2x+11/2