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So a quick little review of something we've already done is how to graph using the x and y intercepts.
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What we're going to do is we're going to find out where this graph crosses the x intercept and where it crosses the y intercept and then we're going to go and sketch our line.
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If you remember, here's our y-axis. At the y-air intercept, our x value is zero and on our x-axis, the x-intercept, our y value is zero for any given point.
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So if I want to find out what the x-intercept is, that means where my graph crosses the x-axis, I'm going to say y is equal to zero.
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Because remember, if you just think of this as a number line, at this point, which is on the x-intercept, y does not have a value, so y is zero.
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So x-intercept, so I'm going to do this as a zero and for y, so I have 5x plus 2 times zero equals 8.
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Therefore, 5x equals 8, 2x5, 2x5, 2x5, x equals 8x.
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Now, you might initially say, well, let's get me kind of hard to graph, you know, how am I going to really do that?
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Well, what do you kind of look at that and say, well, 5 is going to go to 8, you know, one time, and there's going to be a remainder of 3.
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And then 3-5 is roughly, so you're going to, for example, 1 and 3-5.
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So I need to go over 1, and then if you kind of broke these down into 5 equal sections, you'd go over 3.
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So 1, 2, 3, 4, 5, so I go over 1, 2, 3.
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So that's approximately 1 and 3-5.
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Then I find that y-intercept.
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So where the line crosses the y-axis, I have a look at my x-number line.
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And I notice that on this number line, my x-value is going to be 0, because I'm not going to move left or right on this line.
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So therefore, x is going to be equal to 0.
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So I have 5 times 0 plus 2y equals 8.
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Therefore, 2y equals 8.
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If I buy 2, y is equal to 4. So I go up 4, 1, 2, 3, 4. That, I just connect my 2-box.
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And I try to make a straight line, and that's going to be my equation.
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So the main important thing is when graphene is in the x-y-intercepts is to find the x-intercept.
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You put y for 0, and then plot it on the x-axis.
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And so that's how you graph using the x-y-intercepts.