Solve each system by graphing? Need some help. :(

1.) y = -x + 1
y= 3x + 12

2.) y += 1.5x + 2
4.5x - 3y = -9

3.) y = x + 1
2x - 2y = -2

Question

Solve each system by graphing? Need some help. :(

1.) y = -x + 1
y= 3x + 12

2.) y += 1.5x + 2 
  4.5x - 3y = -9

3.) y = x + 1    
    2x - 2y = -2

anonymous · Answer

plug the two sets of equations into a graphing calculator and graph them. To solve it, just find the point of intersection of the two equations.

anonymous · Answer

or if you want to graph it by hand, you can find the x and y intercepts of the equations and plot them on the graph and then draw a straight line through them.

anonymous · Answer

I don't have a graphing calculator, and im still really confused about this.

anonymous · Answer

well, u could graph it by hand, and then find the intersection by math :)