Answer:
[tex] \sqrt{2} [/tex]
Step-by-step explanation:
use the distance formula
[tex]d = \sqrt{ {(x2 - x1)}^{2} } + {(y2 - y1)}^{2} [/tex]
[tex]d = \sqrt{ {(2 - 1)}^{2} + {(3 - 4)}^{2} } [/tex]
[tex]d = \sqrt{ {(1)}^{2} + {( - 1)}^{2} } [/tex]
[tex]d = \sqrt{1 + 1} [/tex]
[tex]d = \sqrt{2} [/tex]
