How to determine a removable discontinuity of a rational function

Determine whether the graph of the function has a vertical asymptote or a removable discontinuity at x=4 of f(x)=(x^2-3x-4)/(x-4)

[honey-jfvo]

Thanks for explaining the removable discontinuity part! Ps- ur handwriting is rlly nice

[notreallyheroic]

Thank you miss, this helped a lot! XD

[lana]

You spelled 'whether' wrong but otherwise great

[TwaKfreak]

I had this same question on a test but what do I do if there are absolute values on the x value of the denominator lol Its confusing me alot

[DeeznutztheOG]

but how do you know its not a vetical asymptote?