Answer
The following relations is a function.
Work Step by Step
The relation {(a, b), (b, a), (c, c), (e,d)} is a function. to solve this we can suppose that a=1, b=2. c=3 , d=4 and e=5.
Using these values for the variables, the set becomes {(1, 2), (2, 1), (3, 3), (5,4). This shows that the following relations is a function because for each x value there is only one y-cordinate value. Thus the relation passes the vertical line test as there are no two y values for one x values and therefore the relation is a function.
