Question

Which points are separated by a distance of 4 units?A. (3,6) (3,9)B. (2,7) (2,3)C. (1,5) (1,3)D. (4,2) (4,7)

Answer 1

let us take the point (2,7) and (2,3) the distance between these two is

`\begin{gathered} d=\sqrt[]{(2-2)^2+(7-3)^2} \\ d=\sqrt[]{4^2} \\ d=4\text{ unit} \end{gathered}`

Hence these two points are separated by 4 units.

So option B is correct.