.
From the given plot, one can see that vertices are at y= 2.
The period is
.
Vertical asymptotes are at x=
, k = 0, +/-1, +/-2, ...
Hence, given function is y =
= 2*csc(x), in cosecant form, as requested.
Solved.
It is as clear as at the day light and is as simple as 2 x 2 = 4.