Use the given points to find the component form of PQ righta
Solution
a) P( 1,1) and Q ( 2, 5)
PQ = (5-1 , 2-1) = ( 4 , 1)
|PQ| = sqrt(4^2 +1) = sqrt(17)
b) P (-3, -5) and Q (-5, 1)
PQ = ( -5 +3 , 1+5) = (-2 , 6)
|PQ| = sqrt(2^2 +6^2) = sqrt(4+36) = sqrt40
c) P(4,2) and Q (0, -1)
PQ = (0 -4 , -1 -2) =( -4 , -3)
|PQ| = sqrt(4^2 +3^2) = 5
