Explanation:
The domain of a function, relation, or graph is a set of all possible inputs of the former.
The inputs of a function refers to the x values of the function.
The inputs of a graph referes to the numbers on the horizontal axis.
The inputs of a relations refers to the x coordinates of the coordinate pairs.
So here the domain for Q1 is
1,3,5,7,13,6
The domain for Q2 is
3,-3,-6,2,-20