Rational Fuction?

Find the domain of the rational function.

1. f(x) = x / 7x-10

2. f(x) = 4x / -9 + x

Top 1 Answers

A few days ago

jegs913

Favorite Answer

for these rational functions the only thing that is out of the domain is when the x makes the denominator 0. so…

1. 7x-10 =0

x=10/7

therefore domain is all real numbers except 10/7

or (-infinity, 10/7)U(10/7, infinity)

2. -9+x=0

x=9

domain is all real numbers except 9

or ( -infinity, 9)U(9, infinity)

Hope this helps.

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