YZ and XZ
22 and 22
10 plus 12 equals 22.
12 plus 10 also equals 22 because regardless of what order they're in, they're gonna equal the same thing.
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.