00:01
So in this problem, we're given two linear equations.
00:06
X plus y equals 0, and 3x plus y equals 2, and asked to graph them.
00:17
Okay, so let's start our graph here.
00:23
Of course, this is x, and this is y.
00:26
So if we look at the intercept for a second on this first graph, when y is zero, then x is zero.
00:33
And when x is zero, y is zero.
00:38
Okay, so that means i go through zero, zero.
00:44
And i need another point in order to draw this line.
00:47
So when x is, i'll say this is 10.
00:53
When x is 10, y is negative 10, isn't it? so that'll be down here, and negative 10.
01:02
So it gives me another point down here, which means this line goes like so through these two points.
01:15
This is x plus y equals zero.
01:19
All right.
01:22
Let's look at the next one.
01:24
Let's find the intercepts here.
01:25
When y is zero, i have 3x is equal to 2, and so x is 2 over 3...