Question

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

Answer 1

13 unit

Explanation:

By the distance formula,

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

`d=√((x_2-x_1)^2+(y_2-y_1)^2)`

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

`BC=√((-4-8)^2+(-2+7)^2)`

`=√((-12)^2+(5)^2)`

`=√(144+25)`

`=√(169)`

`=13\text{ unit}`