Homework Help: Pre-Cal

Posted by nelly on Sunday, January 8, 2012 at 9:38pm.

Find the distance d(P1,P2) between the points P1 and P2.

P1= (-2,1); P2= (0,0)
P1= (-1,1); P2= (2,2)
P1= (-1,0); P2= (2,4)
P1= (2,-3); P2= (4,2)

Pre-Cal - Reiny, Sunday, January 8, 2012 at 10:19pm
You should know the distance formula

I will do the 2nd, you do the others

Distance = √( 2-(-1))^2 + (2-1)^2 )
= √( 3^2 + 1^2)
= √(9+1)
= √10

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