Answer:
2nd option
{(-8, -2), (-4, 1), (0, -2), (2, 3), (4, -4)}
Step-by-step explanation:
For a function to exist, every value of input must have exactly one value of output.
The rest of the relations(1, 3, and 4) have 2 outputs for 1 input so they dont make a function.
The answer should be b. 12
25%
since there are 4 books, and only one is a mathematics book, there is a 1/4 chance. in other words, 25%