Distance between two points is an application of the pythagorean theoream and can be calculated with the following expression:
[tex]d=\sqrt[]{(x_2-x_1)^2+(y_2-y_1)^2}[/tex]We have two given pints:
(x1, y1) -> (1, 3)
(x2, y2) -> (3,4)
Then, we can substitute and determine the distance:
[tex]\begin{gathered} d=\sqrt[]{(3-1)^2+(4-3)^2} \\ d=\sqrt[]{2^2+1^2} \\ d=\sqrt[]{5}\text{ units} \\ d\approx2.24\text{ units} \end{gathered}[/tex]