The first number in each pair is the x-value, and the second number is the corresponding y-value.
Table:
x
y
0
0
-3
2
6
4
-1
1
Graph:
Mapping:
Domain: {-3,-1,0,6} Range: {0,1,2,4}
Practice makes perfect
To express the given set of (x,y)ordered pairs in a table, we will list all of the x-values in one column and all of the y-values in another column.
x
y
0
0
-3
2
6
4
-1
1
Now, to graph an ordered pair (x,y), we will start by identifying the x- and y-coordinates on the axes. Then, we will trace along the grid lines to the point on which both coordinates lie. We will do this for every ordered pair in the relation.
To show the relation of ordered pairs (x,y) as a mapping, we will list all of the unique x-values in one vertical list and all unique y-values in another vertical list. Then, we can use arrows to connect corresponding x- and y-values.
The domain of this relation is the set of all unique x-values, and the range is the set of all unique y-values.
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