Answer
$5$ units
Work Step by Step
RECALL:
The distance $d$ between the points $(x_1, y_1)$ and $(x_2, y_2)$ can be found using the distance formula:
$d = \sqrt{(x_1-x_2)^2+(y_1-y_2)^2}$
Use the formula above to obtain:
$d=\sqrt{(-1-2)^2+(0-4)^2}
\\d=\sqrt{(-3)^2+(-4)^2}
\\d=\sqrt{9+16}
\\d=\sqrt{25}
\\d=\sqrt{5^2}
\\d=5$
Thus, the distance between the two given points is $5$ units.