Question 389064
What is the distance between points (5,-3) and (0,9) in a coordinate system?


distance d = sqrt( (x2 - x1)^2 + (y2 - y1)^2 )
d = sqrt( (0 - 5)^2 + (9 - -3)^2 )
d = sqrt( -5^2 + 12^2 )
d = sqrt( 25 + 144 )
d = sqrt( 169 )
d = 13