When the price of an item was increased by $5, i bought 2 items fewer with $20. what is the
original price of the item?

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:

c. side angle side. u shares the same sides