Determine which set represents a function. Then state its domain and range of the function.

I. {(3, -1), (4, 2), (5, 3), (6, 3)}

II. {(3, -1), (4, 2), (4, 3), (5, 3)}

III. {(3, -1), (3, 2), (4, 3), (5, 3)}

IV. {(3, -1), (4, -1), (5, 2), (5, 3)}

(III) Domain= {3, 3, 4, 5), Range= (-1, 2, 3}

(IV); Domain= {3, 4, 5), Range= {-1, 2, 3, -1}

(I); Domain= {3, 4, 5, 6), Range= (-1, 2, 3}

(II); Domain= {3, 4, 5, 3), Range= (-1, 2, 3}