To find the m(slope) of our graph we can take two points from the graph, im going to use (0,2) and (1,8) the formula for slope is y2-y1/x2-x1
Plug the points in to get 8-2/1-0
The slope of this equation is 6.
For the y-intercept we just find where the line meets the y-axis and that is at 2.
The equation for this graph is y=6x+2
YOur greeatest common factor is 216. If you prime factor them it comes out to 216. Good luck.
From here, it looks like all three sides of the right triangle are missing. I don't see any of them in the question.