Question

Find BC if B(8, -7) and C(-4,-2)

Answer 1

Answer:

13 unit

Step-by-step explanation:

By the distance formula,

The distance between two points $(x_1,y_1)$ and $(x_2, y_2)$ is,

$d=\sqrt{(x_2-x_1)^2+(y_2-y_1)^2}$

Thus, the distance between B(8,-7) and C(-4,-2) is,

$BC=\sqrt{(-4-8)^2+(-2+7)^2}$

$=\sqrt{(-12)^2+(5)^2}$

$=\sqrt{144+25}$

$=\sqrt{169}$

$=13\text{ unit}$