Algebra Examples
(1,-2)(1,−2) , (3,6)(3,6)
Step 1
Since for each value of xx there is one and only one value of yy, the given relation (1,-2),(3,6)(1,−2),(3,6) is a function.
The relation is a function.
Step 2
Since the relation is a function and for each value of yy there is one and only one value of xx, the given relation (1,-2),(3,6)(1,−2),(3,6) is a one-to-one function.
The relation is a one-to-one function.