The question asks that I : Find the point of intersection for each pair of lines. a) x + y= 4, x - 2y=1 b) x + 2y= 0, x - y= 3 c) 2x + y= 1, x + y= 2 d) 6x= 12 - 3y, 1/2y - x= -5 e) 1/2x - y=8, x + 1/3y= 2 f) 5 + y= 4x, x + 2= 2/3y I understand the formula of y=mx+b, m being the slope and b being the y-intercept. But everytime I try to solve these problems, my answer is different than the one in the book. I figured I should change each of the equations from standard form to y=mx+b format. For example a) x+y=4 y=-x+4 x-2y=1 -2y=-x+1 y=1/2x -1/2 Am I doing something wrong? Because, when I try to draw it out on a graph my answer ends up being something weird like (2 1/3, 3/4). Also is there any other way I can pind the POI without drawing a graph? I need this for my exams...so please...help?