Question

What is the length of `AB` if `A(2, -6)` and `B(7,1)`?

Answer 1

`sqrt 74`

Explanation:

Apply Distance formula to points `A(2,-6), B(7,1)` in order to get the distance.

Length AB = `sqrt ( (2-7)^2 + (-6-1)^2)`

= `sqrt ( ( -5)^2 + (-7)^2)`

= `sqrt ( 25+49)` = `sqrt 74`