For rational functions, there are horizontal and vertical asymptotes which help us find the domain and range. For the rational function y equal fraction numerator x minus 1 over denominator x minus 4 end fraction :
a) What value cannot be an input value (domain)?
b) What value cannot be an output value (range)?

Question

For rational functions, there are horizontal and vertical asymptotes which help us find the domain and range. For the rational function y equal fraction numerator x minus 1 over denominator x minus 4 end fraction :
a) What value cannot be an input value (domain)?
b) What value cannot be an output value (range)?

anonymous · Answer

$$f(x)=(x-1)/(x-4)$$
Well dividing by zero is undefined. So the domain x can not equal 4.

For the range, you can't have y=1