Right, i don't believe this is a homework question. The only reason I am stating this is because PF are stringent with their rules. I'm quite confused and I'm not sure how to explicitly state my problem. The vertices of a triangle are (a,b) (c,d) and (e,f). This can be arranged into a single matrix. T = a c e b d f with brackets either side i know. HOWEVER when solving simultaneous equations 2x-3y=5 and -5x+6y=-8 the matrix product 2 -3 X x = 5 -5 6 y 8 is used, so the x values take the first column in this form as oppose to the x values taking the first row in the triangle vertices matrix. I HAVE TO STATE AGAIN THAT THIS IS NOT A HOMEWORK QUESTION, IT IS JUST A MATTER OF CURIOSITY!