What is 5the answer 5t=t/45

In the figure dhg fhe which statement is true by cpctc

Is each relation a function? if so, state whether it is one-to-one or many-to-one. 3. (-4,7), (-3,5), (1,4), (3,-8), (5,-11) 4. (-4,8), (-2,4), (0,1), (2,4), (4,8) 5. (-2, 1), (-2,3), (0,-3), (1,4), (3,1)

If a || b and b | y, then ? a) x || y. b) x | a. c) a | y. d) a || y.