Which of the following sets of ordered pairs represents a function? OA. {(9,7), (0, -4), (8,4), (0,6) }
OB. {(0, 1), (0, -1), (2, 4), (5,6) }
OC. {(1, 8), (1, 0), (1, -8), (1, 1) }
OD. {(2,4), (0, 0), (4,8), (3,6)}

in mathematics, a function is a relationship between two variables such that the value of one of the variables, called the dependent variable, is determined by the value of the other variable, called the independent variable. there is a specific term we use to describe the set of independent variables of a function.

in simplified version   it would be x ≤-4

step-by-step explanation:

multiply each term in x ≤-4 by -1

the number of the people going.

step-by-step explanation:

the cost to buy one movie ticket is $7. if the total cost for the movie is a function of how many people go, then the input is : the number of the people going.

my answer got deleted but it's a

step-by-step explanation: