Question 131512
Given {{{s(x)=(2x-4)/(x^2+x-2)}}},find the asymptotes and intercepts and then graph.
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s(x)=(2x-4)/(x^2+x-2)
Factor to get:

s(x) = (2(x-2))/[(x+2)(x-1)]
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Horizontal Asymptote:
The highest power in the rational expression is x^2
ha = 0x^2/1x2 = 0/1: ha at y = 0
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Vertical Asymptote:
va's where the denominator becomes zero
va  at x = -2 and at x=1
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Graph:
{{{graph(400,300,-10,10,-10,10,(2x-4)/(x^2+x-2))}}}
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Cheers,
Stan H.