The formula for the distance between the point (x1,y1) and the line of the equation ax + by + c = 0 is
d = |ax1 + by1 + c|
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sqrt(a^2 + b^2)
so here we have
d = | 2*1 +(-3)2 + 2|
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sqrt(2^2 + (-3)^2)
= 2 / sqrt 13
= 2 sqrt13 / 13
