The formula for calculating the distance between two points is:
[tex]d=\sqrt{(x_2-x_1)^2+(y_2-y_1)^2}[/tex]Therefore, for thr given points,
[tex]\begin{gathered} d=\sqrt{(-2-1)^2+(4-3)^2} \\ \text{ = }\sqrt{3+1} \\ \text{ =}\sqrt{4} \\ \text{ =2} \end{gathered}[/tex]