SOLUTION: i don't how to get this at all can anyone help me? please. And i don't get how to find the slope. please if willing help me if you know how to do it. please and thank you.

Algebra ->  Linear-equations -> SOLUTION: i don't how to get this at all can anyone help me? please. And i don't get how to find the slope. please if willing help me if you know how to do it. please and thank you.      Log On