pb is a line segment on a number line. it has endpoint at -2 and 12. what is the coordinate of it's midpoint? Show your work so that way i can understand it

Answer 1

A number line is a hor. line:
P(-2,0), M(x,0), B(12,0).

x-(-2) = (12-(-2))/2.
x+2 = (12+2)/2.
X = ?

9
-2,0)

Answer 2

The midpoint is just the average of the ends. So, it is at (-2+12)/2 = 5

check:
-2 = 5-7
12 = 5+7