For which system of equations is the graph a pair of parallel lines? A. { y = 2 3 x − 4 y = 5 + 2 3 x B. { y = 7 9 x + 9 y = 9 − 7 9 x C. { y = 1 5 x − 1 y = 5 x − 1 D. { y = 3 4 x + 8 y = 8 − 4 3 x

a. -0.3 > -0.33

c. side angle side. u shares the same sides

solve systems of equations by graphing. a system of linear equations contains two or more equations e.g. y=0.5x+2 and y=x-2. the solution of such a system is the ordered pair that is a solution to both equations. to solve a system of linear equations graphically we graph both equations in the same coordinate system