0.25(x+40)=4+0.75(x-8)

0.25(x+40)=4+0.75(x-8)

0.25x +(40*0.25)=4+0.75x -0.75(8)

0.25x + 10=4+0.75x-6

0.25x+10=0.75x-2

10+2=0.75x-0.25x

12=0.5x

x=24

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: