Gerald read 6/7 of a book. Mary read 2/7
of the same book.
How much more of the book did Gerald read?
A 2/7
B 8/7
C 4/7 or D 7/8

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: