I NEED HELP WITH BEGINNING PRE CALC?

Question

Given the line segment between the points (-2,2) and (3,-6)

A. find the exact length of the line segment

B. Find the midpoint of the line segment

How do you do these?

Answer 1

We just went over this in my Pre-Cal

A: (x1-x2)+(y1-y2)

B: ((x1-x2)/2, (y1-y2)/2)

So:

A: -2+3=1 2+-6=4 1+4=?

B: (1/2, 4/2) <--- you might want to reduce.  

Answer 2

Distance Formula = square root of((x2-x1)^2 + (y2-y1)^2))

square root of(25 +64)

= square root of 89

Midpoint = (x1 + x2)/2 , (y1 + y2)/2

                = ( (-2 +3)/2 , (2 - 6)/2 )

Midpoint = (.5 , -2)

Mrs. Harkness is wrong because she forgot that the 4 is negative.