Answer:
The distance formula can be used to solve this equation.
[tex]d= \sqrt{(x_{1}-x_{2})^2+(y_{1}-y_{2})^2[/tex]
After plugging in all the values you get:
[tex]d= \sqrt{(5-1)^2+(5-5)^2} [/tex]
This simplifies to [tex]d= \sqrt{16} [/tex], so the distance between the two points is 4.