Assuming a 2.5% discount will apply , what is the net price of an invoice for $1,275.55 ? a) $1,136.66 b) $1,243.66 c)$1,250.00 d)$12,436.61

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.

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