Ineed with this what will be the equation for this line?

Ok so your looking at a graph but if I were to do it this is how I would
0-8=-8
0-7=-7
0-6=-6
0-5=-5
etc
but that's my thoughts if you were to do a point that would be on the x axis so you would put it first like (-3,6) that postive six is on the y axis

If you know two of the points then you can find the slope of the line by finding the slope between the two points. Once you have the slope, write your equation as y=mx+b with the slope written in. Next, plug in one of the points that's on the line into the equation to find the 'b' (y intercept) next write the equation of the line.

That they are numbers and related to each other.

You need to include the original coordinates of the triangle to answer this. and how much does it translate (move left right up down)