Question 204876
y=2/(4-x) Assuming that this is the problem.
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The domain is all real numbers except x=4 because division by zero is not allowed.
There is a vertical asymptote at x=4.
There is a horizontal asymptote at y=0 because x in the denominator is a higher degree than x in the numerator.
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Ed
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{{{graph(500,500,-10,10,-10,10,2/(4-x))}}}
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