Answer:
it gives you the formula, so all you have to do is plug in the coordinates
\begin{gathered}d = \sqrt{ {( - 1 + 3)}^{2} + {( - 1 - 1)}^{2} } \\ d = \sqrt{ {(2)}^{2} + {( - 2)}^{2} } \\ d = \sqrt{ 4 + 4 } \\ d = \sqrt{8} \\ d = 2 \sqrt{3} = 3.4641... \\ \\ d = 3.5\end{gathered}
d=
(−1+3)
2
+(−1−1)
2
d=
(2)
2
+(−2)
2
d=
4+4
d=
8
d=2
3
=3.4641...
d=3.5
