Solve this system by graphing: y= x - 1
y= 9 - x
I understand the first one; y= x - 1. My first point would be at -1, then I rise 1 point and run 1 point (x always has a 1 in front of it), and that's my second point.
I get that.
I don't get the second one though; y= 9 - x
Is x even suppose to be there? Do I move it? Switch it around with 9?
Here's what I think. Leaving the equation just as it is; my first point on the graph would be at -1, then I would rise 9 and run 1, that'll be my second point.
When I graph that my solution is (0,1), but it's suppose to be (5,4).
So I've gone wrong some where...any ideas how to do this!