Question

Determine if the following relations are functions. If they are functions, also state the domain and range.

Answer 1

No they are not functions

Answer 2

No it is not a function because the 10 in the input is repeated twice (the arrow is connected to 2 numbers)

D= {7, 9, 10}

R= {7, 9, 8, 10}

The pairs are (7, 7), (9, 9), (10, 8), (10, 10)