The formula of the distance between two points:
[tex]d=\sqrt{(x_2-x_1)^2+(y_2-y_1)^2}[/tex]
We have the points (-1, -10) and (-12, -3). Substitute:
[tex]d=\sqrt{(-12-(-1))^2+(-3-(-10))^2}=\sqrt{(-11)^2+7^2}=\sqrt{121+49}=\sqrt{170}[/tex]
[tex]\sqrt{170}\approx13.04[/tex]
Answer: d ≈ 13.0
