00:01
Okay, in the following exercises, we want to solve by graphing.
00:04
In order to do that, i'm going to turn both my equations to y equals mx plus b form because that's made up with a slope and the y intercept.
00:13
So to start with that, i'm actually just going to do this.
00:15
I'm going to bring the four to the other side here, and i'm just going to rewrite the order of this.
00:19
So, for example, it will be negative 3y is equal to x minus 4.
00:25
From here, i'm going to divide everything by a negative 3.
00:29
So y is equal to a negative one -third x minus, well, sorry, negative divide by negative is going to give me a positive four -thirds.
00:37
Over here, we'll subtract the 2x to the other side.
00:40
So that's 6y is equal to a negative 2x plus 8.
00:44
And i can divide everything by 6, so that y equals a negative 1 -third x plus 4 over 3 when i simplify that.
00:54
To help demonstrate what's happening here, i'm going to use two different colors.
00:57
So i'll start with this equation.
00:59
Four thirds is my y intercept.
01:01
So i'm going to start with that...