(-2,2) (2,-1)
You can use Pythagorean theorem to solve this:
[tex]a^{2} +b^{2} =c^{2}[/tex]
[tex]3^{2} + 4^{2} =c^{2}[/tex]
9 + 16=[tex]c^{2}[/tex]
25 = [tex]c^{2}[/tex]
[tex]\sqrt{25} =\sqrt{c^{2} }[/tex]
c = 5
^^^This means that the length between the two points is 5 units
Hope this helped! Let me know if there is anything else I can do!