Question

Determine if the relation is a function. Explain why or why not.1) {(-1,8),(0, 15),(1,-4), (2, 0))2) {(-5,2), (5,2), (0, -3), (3,-8); 3) (-2, 7), (6,2), (-2,-3), (0, 9)}4) {(7,2), (4,-6), (2,-2), (4,-9); 5) {(2,3), (2,4), (2,5), (2,6)}6) {(1,-4),(2,-4),(3,-4),(4,-4)}

Answer 1

1) {(-1,8),(0, 15),(1,-4), (2, 0)}

It is a function as there is not any pair of points which have the x-coordinate and different y-coordinates.

2. {(-5,2), (5,2), (0, -3), (3,-8); 3) (-2, 7), (6,2), (-2,-3), (0, 9)}

It is not a function as there is a pair of