Which relation is a function?
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A. (1,0). (3.0), (1, 1), (3, 1) (1, 3)
o
B. (1, 1), (2.2), (3, 3), (4, 4), (5,8)
C. (2, 7). (6.5), (4,4), (3, 3), (2.1)
O
6
D. (9. -3). (9,3), (4, -2). (4, 2). (0,0)

answer: a and b

step-by-step explanation:

answer: domain and range mean all possible values of x and y that could be substituted to the inequality. a solution means all possible values that make the inequality statement true. so while the range is still all real numbers, the solution is the shaded area, for which y will always be greater than the line of the function.