Use the point slope equation. Imagine there is a line that passes through the point (6,-2) and this line has some other point on it, let's call it (x, y). Then the slope of the line would be delta y/delta x, or, (y - -2)/(x - 6) = -5/2. Working through the math gives 2*(y+2) = -5*(x-6), or, 2y + 5x = 26. Alternatively you can write this as y= -(5/2)*x + 13.
