Question

How many vertical asymptotes exist for this function?

Answer 1

Remember that to find the vertical asymptotes of rational functions, we just need to set the denominator equal to zero and solve for the variable, in this case
`x`, so lets do it:

`(x-4)(x+1)=0`

`x=4,x=-1`

As you can see, our rational functions has 2 vertical asymptotes:
`x=4` and
`x=-1`