Question

Find the distance between the pair of points.
1) (1,5) and (-4,-1)

Answer 1

`√(61)`

Explanation:

Calculate the distance d using the distance formula

d = √ (x₂ - x₁ )² + (y₂ - y₁ )²

with (x₁, y₁ ) = (1, 5) and (x₂, y₂ ) = (- 4, - 1)

d =
`√((-4-1)^2+(-1-5)^2)`

=
`√((-5)^2+(-6)^2)`

=
`√(25+36)`

=
`√(61)` ≈ 7.8 ( to 1 dec. place )