Question

What’s the distance between the points (3,6) and (3,1)?

Answer 1

`\displaystyle\\{\bf Method 1:}\\\\d=√((3-3)^2+(6-1)^2)=√(0^2+5^2)=√(25)=\boxed{\bf5}\\\\{\bf Method 2:}\\\\\text{The points are the same vertical as they have the same abscissa.}\\\\\implies~~d=6-1=\boxed{\bf5}`