Friday, March 8, 2013

how do we use circle equations to solve problems?

How Do We Use Circle Equations to Solve Problems?

What is the midpoint?
(5,2) and (-3,-4)                          -4+2=-2
5+-3=2                                         -2/2=-1
2/2=1                                           -1=y
1=x
m=(1,-1)

What is the distance from (1,-1) to (5,2)?
d= (5-1)^2+ (2+1)^2
d= 16+9
d= 25
d=5