The relation is,
Express the relation as ordered pairs .
Draw a table with two columns and list the x-coordinates in the first column and y-coordinates in the second column.
x |
y |
-6 |
5 |
-4 |
2 |
-1 |
1 |
2 |
1 |
The domain of the relation is the set of all first (x-coordinates) coordinates.
The domain of the relation is .
The range of the relation is the set of first (y-coordinates) coordinates.
The range of the relation is .
Each element of the domain is paired with exactly one element of the range. Therefore the relation is a function and this one-to-one function.
Yes the relation is a function.
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