All options are the same for each variable

Any is very appreciated! (picture is provided below)not sure how to do this at all won't lie

Me, prove a quadrilateral with vertices g(1,-1), h(5,1), i(4,3) and j(0,1) is a rectangle using the parallelogram method and a rectangle method.

Lines a and b are parallel. what is the value of x? -5 -10 -35 -55