Question

Find the distance between the points (-3,7) and (4,12).

Answer 1

distance from-3 to 4 is 7
distance from 7 to 12 is 5
pythagoras gives
\[\sqrt{7^2+5^2}\]
\[\sqrt{49+25}\]
\[\sqrt{74}\]

Answer 2

x2-x1 + y2-y1