00:01
To solve the system of equations by graphing, we need to turn both equations into y equals mx plus b here.
00:09
This will be slope and a y intercept in that format.
00:13
So for the first one here, i'm going to start off by subtracting 2x over to the other side.
00:19
So that's going to be a negative y is equal to a negative 2x plus 4.
00:23
But i want it to be a positive y.
00:25
So it means i can divide every single item by a negative 1.
00:29
So it's going to be a positive 2x.
00:31
Minus 4.
00:33
For this one, i'm going to start off by subtracting the 2x over to the other side.
00:38
So 3y is equal to a negative 2x plus 12.
00:43
And that i could divide every turn here by 3.
00:47
So y equals a negative 2 thirds x plus 4.
00:52
So for the first equation, my y -erscept is at negative 4.
00:55
And i have a positive 2 for the slope...