Question

What's the difference between (4,-1) and (-2,3)

Answer 1

Are you looking for the midpoint between them?

Answer 2

given two points \((x_1,y_1)\) and \((x_2,y_2)\) you can use the Pythagorus theorem to find the distance between them as follows:

\[d=\sqrt{(x_2-x_1)^2+(y_2-y_1)^2}\]