To write the equation of two lines that have every point in common, you must have equivalent equations. So begin with any equation for a line ... y= 2x + 5. Multiply it by any integer or fraction... (-2) -2y = -4x - 10 that easy...
OR 8x - 3y = 10 and 24x - 9 = 30 ( multiplied by 3) .... In all reality, as long as you perform the same operation on both sides of the equ
