Question 834230
{{{f(x)=(x+a)/(x-4)}}}
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When {{{y=0}}},
{{{(x+a)/(x-4)=0}}}
{{{x+a=0}}}
{{{x=-a=2}}}
{{{a=-2}}}
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{{{f(x)=(x-2)/(x-4)}}}
{{{ graph( 300, 300, -5, 5, -5, 5, (x-2)/(x-4)) }}}