Question

Determine a distância entre os pontos A(-2,-4) e B(-3,-2)

Answer 1

$d = \sqrt{(x - x_{0})^{2} + (y - y_{0})^{2} }\\d = \sqrt{(-2 - (-3))^{2} + (-4 - (-2))^{2} }\\d = \sqrt{(-2 + 3)^{2} + (-4 +2)^{2} }\\d = \sqrt{(1)^{2} + (-2)^{2} }\\d = \sqrt{1+ 4 }\\d = \sqrt{5 }$