Answer:
Step-by-step explanation:
use the dist. formula
d = sq rt [ ( x2 - x1)^2 + ( y2 - y1)^2 ]
where
P1 = (5, -1 ) in the form ( x1 , y2)
P2 = (5 , -7) in the form (x2, y2)
then
d = sq rt [ (5 - 5)^2+ (-7- (-1) )^2 ]
d = sq rt [ 0 + ( -7 + 1)^2 ]
d = sq rt [ -6^2 ]
d = sq rt [36]
d= 6
:)
