I need the answer for this please

Abag of popcorn contains 483 calories and servers 3.5 people. how many calories are in each serving.

Could answer every question with steps

Question: a) does the given set of points represent a linear function? how do you know? b) assume that the point (-2,4) lies on the graph of a line. what y-values could complete this set of ordered pairs that lie on the same line: (- (hint: there are several correct answ