Emergency hw

Which of the following ordered pair could NOT be included in this set if it is a
function?
{(-4,2).(3,6),(4,3), (x, y) }

A. (x, y) = (3,6)
B. (x, y) = ( 4,-3)
C. (x, y) = (1,2)
D. (x, y)= (-3,6)

Draw a tape diagram to represent each situation.for some of the situations,you need to decide what to represent with a variable andre bakes 9 pans of brownies.he donates 7 pans to the school bake sale and keeps the rest to divide equally among his class of 30 students