Answer: y=5x-3
Explanation:
y=mx+b
find slope. (1, 2) (2, 7)
y-y1/x-x1
5/1=5
y=5x+b.
substitute in one ordered pair (choose either one, it doesn't matter since both pairs are on the line)
2=5*1+b
2=5+b
-3=b
Put it together
y=5x-3
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