Trigonometric Identities Please help answer question

a function could be identified in 3 ways either on a chart,graph, or ordered pairs. first a function is that each point has its own. the rule is that there can be many x's to one y but there can not be 2 x's at different y's. so on a graph when you put a straight line through the y's there should be one dot only to be a function.

step-by-step explanation:

b. 153 students do not participate in sports and seventy-five 12th graders were surveyed

you first to choose the points and then move from then as the slope you have