Which of the following relations is a function? {(1, 2), (1, 0), (-3, -4)} {(1, 2), (3, 2), (1, 4)} {(1, 2), (3, 2), (5, 2)} {(1, 2), (-3, 2), (-3, 3)} pl !

b

step-by-step explanation:

a difference is the result of subtraction. while each of these expressions has subtraction in it, a difference will be the result when subtraction is the last operation applied in the order of operations for the expression. this means subtraction must be outside of the parenthesis. only b has this.