Consider the relation $\left\{\left(5,8\right),\left(9,7\right),\left(7,2\right),\left(6,4\right),\left(2,1\right)\right\}${(5,8),(9,7),(7,2),(6,4),(2,1)}.
Is this relation a function?
Yes
No
Consider the relation $\left\{\left(2,5\right),\left(6,2\right),\left(2,6\right),\left(4,3\right),\left(3,9\right)\right\}${(2,5),(6,2),(2,6),(4,3),(3,9)}.
Consider the relation $\left\{\left(8,2\right),\left(3,4\right),\left(7,1\right),\left(1,7\right),\left(4,2\right)\right\}${(8,2),(3,4),(7,1),(1,7),(4,2)}.
Consider the relation in the table.