Suppose the average weight of 9 persons are 50 Kg. the average weight of 5 persons is 45 kg, whereas the average weight of last 5 persons is 55 kg then what is the weight of 5 th person will be 1) 45 kg
2)47.5 kg
3)50 Kg
4)52.5kg​

where's the diagrams?

one set of data has more variation than the other. hope this !

y = 3x+4

step-by-step explanation:

to find the slope

slope = (y2-y1)/ (x2-x1)

    = (-8-4)/ (-4-0)

    = -12/-4

  = 3

using the slope intercept form of a line

y= mx+b

we know the slope is 3

we know the y intercept is 4 ( the point where it crosses the y axis or x=0)

y = 3x+4