Point point form, line joining (a,b) and (c,d) is
(c-a)(y-b) = (d-b)(x-a)
(a,b)=(0,2), (c,d)=(-6,-1)
-6(y - 2) = -3(x - 0)
2(y-2) = x
2y -4 = x
y = x/2 + 2
We can pick any of these -- they're all equations for the line.
Answer: x - 2y = -4
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