Which statement proves that pqrs is a parallelogram?
(i'm not really in much of a rush to get this question answered as i can just move on to others, though if i could get an answer soon that would be much appreciated)

To proof pqrs is a parallelogram, we need to show that the gradient (steepness of slope) of line sp and line rq are the same, as well as the gradient of line sr and pq. 

the length of sr also has to be the same with pg as well as the length of side sp and side rq.

the gradient of sp = 
the gradient of rq = 

the gradient of sr = 
the gradient of pq = 

the length of side sp = 
the length of side rq = 

the length of side sr = 
the lengh of side pq = 

hence from the options provided, the option 2 is the correct one. it states that the slope rs and qp equals which is 3 and the length sp and rq are equals which is