Oh, OK...I see what is meant
The correct answer is the third one.... we have
f(x) = (3x - 6) / (2 - x)
We can factor a negative out of the denominator thusly :
f (x) = (3 x - 6) / - (x - 2)
Factor the numerator
f(x) = 3 (x - 2) / / - (x - 2)
"Cancel" the (x -2) term, move the negative to the 3 and we have
f (x ) = -3
Which is the same as saying y = -3 which is what your graph shows....!!!