00:01
Here i'm given the equation y equals x plus 2, asked to make a table of values, and then graph six sets of ordered integer pairs for the equation.
00:11
So that is we're going to plug in some values of x into the equation to obtain the matching y values, and then we're going to be able to graph those as ordered pairs and kind of see what this graph is going to look like.
00:23
So we know that y is equal to x plus 2.
00:26
So for each x value, we simply need to add 2 to that value in order to get the corresponding y value.
00:33
So 1, 1 plus 2 is 3, 2 plus 2 is 4, 3 plus 2 is 5, 4 plus 2 is 6, and so forth to get 7 and 8.
00:47
Whenever you have a table of values, remember that you need to see where the x and y values are labeled.
00:53
So even though on this first label, for example, i have 1 and 3 for x and y, that would then be written as the ordered pair, 1, 3, where the x values written first and the y value is written second.
01:08
I can then graph this on graphing paper or any sheet that you label the axes.
01:15
My x values go to 6.
01:16
It's going to label 1, 2, 3, 4, 5, 6.
01:21
My y values go to 8, so i'll label up to 8.
01:27
And sometimes you might have to extend that graph a little.
01:30
So my first ordered pair is 1 comma 3.
01:35
My second pair is 2 .4.
01:40
And remember, x -axis is my horizontal.
01:44
Y -axis is my vertical.
01:46
So i always just look for each corresponding value and then plot where they intersect...