Answer:
Step-by-step explanation:
A = ( -2, 1 )
B = ( 1, -1 )
[tex]\boxed{\bf x_1 : - 2}[/tex] [tex]\boxed{\bf x_2 : 1}[/tex]
[tex]\boxed{\bf y_1 : 1}[/tex] [tex]\boxed{\bf y_2 : - 1}[/tex]
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- [tex]\sf d = \sqrt{(x_2 -x_1) ^{2} + ( y_2 - y_1) ^{2} } [/tex]
- [tex]\sf d = \sqrt{(1 - ( - 2)) ^{2} + ( - 1 - 1) ^{2} } [/tex]
- [tex]\sf d = \sqrt{ {3}^{2} + {( - 2)}^{2} } [/tex]
- [tex]\sf d = \sqrt{(9 + 4)} [/tex]
- [tex]\sf d = \sqrt{13} [/tex]
- [tex]\sf d = 3.6[/tex]
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