00:01
So when i'm graphing a system of inequalities or system of equations, i need them in slope intercept form.
00:06
What is slope intersiform? y equals mx plus b, so y is by itself.
00:10
M is my slope and b is my y intercept.
00:12
They're both already in slope intercept so i can just graph them.
00:16
Do i start with slope or y intercept? always start with slope.
00:19
So with this line, start with at 4.
00:21
My ytership does that 4.
00:23
My slope is negative 1.
00:25
At rise over run, i'm going to go from negative 4, go down 1, right 1, down 1.
00:30
Right one, down one, write one, write one, and so on and so forth.
00:34
Now, connecting these points, am i going to use a solid line or a dash line? solid, because y is less than or equal to, if it was just strictly y is less than, then i would use a dash line.
00:48
Then, which side do i shade? one way to think about this is i could do a test point, zero, zero.
00:55
When i plug in x is zero and y is does this point satisfy this inequality? well, zero is less than or equal to zero plus four.
01:03
Zero is less than equal to four...