00:00It is Y. It satisfies the equation X plus 3.
00:02My colleagues say let's examine the values of X and Y.
00:04I'll create a table right away.
00:07X and Y.
00:09Hey guys, what does Y stand for?
00:11X plus 3.
00:13For example, I say, let's say X is minus 2.
00:15What happens to Y when X becomes minus 2, guys?
00:18It will be 1.
00:18Okay everyone.
00:20What is minus 2 divided by 1?
00:22It is minus 2.
00:24Now, friends, I'm increasing these two units.
00:260.
00:28What happens to our Y when our X is 0, guys?
00:313. As you can see, it increased by 2 units.
00:34Okay, so I'm increasing it by 1 unit from 0.
00:371.
00:37What happens to our Y in this situation, friends?
00:404. That also increased by 1 unit.
00:42And let's also say X is 3.
00:45Increase by 2 units.
00:48What happens to Y when X becomes 3, guys?
00:506.
00:52It will continue like this.
00:54As you can see, friends
00:56X and Y are not proportional.
00:59However, X's
01:01X and Y
01:06It is disproportionate.
01:09So, there's no fixed rate, folks.
01:12But only with the amount of increase in X.
01:15However, X's
01:20with the amount of increase.
01:24How can we see this, guys?
01:27For example, X2 X0
01:28When we look at the differences.
01:31Sections 1-3
01:33What's going on, guys?
01:34X2 divided by X2 1
01:36Let's take a look between these two.
01:421-2
01:44Section
01:45What's up, guys?
01:454-1
01:46What's going on, guys?
01:483 divided by 3 is still 1.
01:49See, it's equal again.
01:51Likewise
01:523-1
01:55Section
01:55What's up, guys?
01:57Of course 6-4
01:59As you can see, the friends are the same.
02:02So, it turns out X and Y are not proportional.
02:04But only with the amount of increase in X.
02:06The amount of increase in Y.
02:13Or
02:16What's up, guys?
02:17With the amount of decrease in X.
02:27Y's
02:30Amount of decrease.
02:35What's up, guys?
02:37We say it's proportionate.
02:38We can examine it in this way.
02:40Thank you for watching.
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