J(2,1), k(2,5) find the distance between each pair of points

Question

For my answer I got a decimal who do I get a full number

Answer 1

It is possible to get a decimal answer when calculating the distance between two points. In this case, the distance formula is not necessary. Since both x values are the same, we can simply calculate the difference between the y values. When you subtract 5-1, the distance will be 4.