Step-by-step explanation:
step 1. The asymptote are x = 1 and y = 2 as far as I can tell from your graph.
step 2. the x = 1 asymptote creates an (x - 1) in the denominator.
step 3. the y = 2 asymptote creates a 2x in the numerator.
step 4. so y = 2x/(x - 1).
