SOLUTION: Solve the system by graphing. 3x + y = –1 9x + 3y = –3

Algebra ->  Equations -> SOLUTION: Solve the system by graphing. 3x + y = –1 9x + 3y = –3       Log On


   

Question 115329: Solve the system by graphing.
3x + y = –1
9x + 3y = –3
Answer by checkley71(8403) About Me  (Show Source):
You can put this solution on YOUR website!
3x+y=-1 or y=-3x-1 (red line)
9x+3y=-3 or 3y=-9x-3 or y=-9x/3-3/3 or y=-3x-1 (green line)
NOTICE THAT THESE 2 EQUATIONS ARE THE SAME THUS THE LINES ARE SUPERIMPOSED GREEN ON RED.
+graph%28+300%2C+200%2C+-6%2C+5%2C+-10%2C+10%2C+y+=+-3x+-1%2C+y+=+-3x+-1%29+ (graph 300x200 pixels, x from -6 to 5, y from -10 to 10, of TWO functions y = -3x -1 and y = -3x -1).