1
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Let's do this question, which of the points is not on the line, why is it X plus four?

2
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All right, was the video, give it a try and then let's do it together.

3
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All right.

4
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We're back.

5
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I hope you've given it a try.

6
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We need to find which among these four points is not on this line.

7
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Right to the way forward is to substitute and check.

8
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Right.

9
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Whether the given point is a solution or this line or not.

10
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All right.

11
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Let's try to do that now.

12
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Let's take the first case.

13
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That's one 12.

14
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Right.

15
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So if you substituted, you will get Y is 12.

16
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Right.

17
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And over here, X is one to 18 to one plus four.

18
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That also adds up to 12.

19
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So this point is on this line.

20
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What about the second option?

21
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You will get it as white, all right, and X is one by two, so eight in the one bedroom plus four.

22
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This also adds up to eight.

23
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So this point is also on the line right now.

24
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Over here, X's root of twenty seven, now eight X plus four.

25
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Let me substitute X as route twenty seven.

26
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So that becomes eight root twenty seven plus four and root twenty seven is three.

27
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Root three.

28
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Right.

29
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So this becomes twenty four.

30
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Root three plus four.

31
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Let me take out four which is common and it becomes four and six root three plus one.

32
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And that is what is given over here.

33
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Right.

34
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And so that's equal to white.

35
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So yes, this point is also on this line.

36
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What about option number four?

37
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You will see that it's not on this line, right?

38
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Because when you substitute it, you will get eight root two plus four.

39
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And that is not equal to 12.

40
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Right.

41
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Therefore, this point over here is not on the given line.