1
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2
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Plot 4 comma negative
1, and select

3
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the quadrant in
which the point lies.

4
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So 4, the first
number in our ordered

5
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pair, that's our x-coordinate.

6
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That says how far to move in the
horizontal or the x-direction.

7
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It's a positive 4.

8
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So I'm going to
go 4 to the right.

9
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And then the second
coordinate says,

10
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what do we do in the
vertical direction

11
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or in the y-direction?

12
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It's a negative 1.

13
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Since it's negative,
we're going to go down.

14
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And it's a negative 1, so
we're going to go down 1.

15
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So that right over there is
the point 4 comma negative 1.

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So I've plotted
it, but now I have

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to select which quadrant
the point lies in.

18
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And this is just a
naming convention.

19
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This is the first quadrant.

20
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This is the second quadrant.

21
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This is the third quadrant.

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And this is the fourth quadrant.

23
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So the point lies in the
fourth quadrant, quadrant IV.

24
00:00:49,560 --> 00:00:51,560
And I guess you have to
know your Roman numerals

25
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a little bit to know that's
representing quadrant IV.

26
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Let's do a couple more of these.

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Plot 8 comma negative
4, and select

28
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the quadrant in
which the point lies.

29
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Well, my x-coordinate
is 8 so I go 8

30
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in the positive x-direction.

31
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And then my y-coordinate is
negative 4, so I go 4 down.

32
00:01:14,450 --> 00:01:17,740
And this is sitting,
again, in not the first,

33
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not the second, not the third,
but the fourth quadrant,

34
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in quadrant IV.

35
00:01:22,626 --> 00:01:23,750
Let's do one more of these.

36
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Hopefully we get a
different quadrant.

37
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So we want to plot the
point negative 5 comma 5.

38
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So now my x-coordinate
is negative.

39
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It's negative 5.

40
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So I'm going to move to the
left in the x-direction.

41
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So I go to negative 5.

42
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And my y-coordinate
is positive so I go up

43
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5, so negative 5 comma 5.

44
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And this is sitting not
in the first quadrant,

45
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but the second quadrant.

46
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And of course, this is
the third and the fourth.

47
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So this is sitting in
the second quadrant.

48
00:01:52,190 --> 00:01:55,460
Check answer, and
we got it right.