Note the XXXXXXXX blue line is XXXXXXX XXX asymptote XXX XX XXX XXXX XX the XXXXXXXX.
Edit X:
To XXXXX this XX XXXX, you would need to first XXXX the XXXXX
Then you XXXX XXX rough shape of the graph (XXXX is XX XXX XXXX XXXXX XX a vertical XXXXXXXXX XX -X XXX a XXXXXXXXXX asymptot XX 1
Then you XXXXX compare it XX XXXXX functions, Here XXXX XXXXX most XXXXXX XXXX XXXXXXX XX something XXXX 1/x
Finally, check XXX behavior XX either side of the XXXXXXXXX
XX we come from the XXXX (XXXXXX below -1, like -X.XX XX we discussed above) the XXXXXXXX XX going XX XX XXXXXXXX because XXX numerator, x-4 is XXXXX to be negative, and XXX XXXXXXXXXXX, x+X is XXXX going to XX negatuve
That XX XX XXX x-X XXXXX x&XX;X XX negative
XXX x+1 XXXXX x<-X is XXXXXXXX
so x-X / x+1 &XX;-1 is positive
XXX XXXXXXXX XX XXX right:
XX know XXXX very close from -1 to 4 the function is XXXXX negative
XXX XX x=X, XXX function is 0
XXXXXXX x-X XX x=X XX 0
XXX x-X XX non-XXXX
so the function is defined, XXX XXXX
So the XXXXXXXX will XXXXX from XXXXXXXX y XXXXXX to positive y values at x=X
and XXX both XXXXXXXX, XXX shape will XX XXXXXXX to 1/x (XXXX XX XX say, a partial XXXXX)
XXXX X:
XX find points you would just XXXX a small table, in XXX XXXXXX XX interest
(x-4)/(x+1)
so from -XX XX 10 you could XXXXXXXXX XXXX XXXXX(XXXX is the XXXX detail one)
XXXXXX that at x = -1 XX the XXXXXXXX symptom
XX, as XXXXX XXXXXX, you know what it looks like roughly (like 1/x)
but XXXXXXX XXXX that at x=X there XX XXX y=X
XXX that the vertical asymptote is XX -1 (because x=-X XXXXXXX in dividing by XXXX, so XX such point exists)
and XXX XXXXXXXXXX asymptote, because it XX a XXXXX of 2 XXXXX order XXXXXXXXXXX, XX the XXXXX XX their co-XXXXXXXXXX (x-X)/(x+1) XXXXX it is XX / XX in XXXX XXXX, so XXX XXXXXXXXXX XXXXXXXXX XX at y=X
So you can make a XXXXX using y=1 as XXX horinstal portion, XXX x=-1 XX XXX XXXXXXXX XXXXXXX
and XXX XXXXXXXX XXXX be to the XXX XXXX, and bottom right quadrants, XXXX a XXXXX like XXXX XX X/x