Answer:
1/ a, c, d
2/ You are missing the option in the picture.
Explanation:
If a relation is a function, one input can only have one output!
1/
b is wrong because 1 has two outputs -3 and 0. So, the answer for 1 is: a, c, d
2/
To test whether the graph is a function, we have to see if one x has 2 y or not! If it has 2 y, then it is not a function.
You are missing the options for question 2! So I can't answer number 2.