Answer:
a
Explanation:
y=1/2x-1/2
To find the slope you do 2-1/5-3 = 1/2 x
then substitute with a coordinate like
y=mx+b
1= 1/2(3) +b
1=3/2 +b
b = -1/2
then combine them
y= 1/2x -1/2
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