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)}
