find the areas and the perimeters of the following figures in which every corner is right angled and the dimensions are in centimetres. ​

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:

the answer is 8/21

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the answer is b