Question

How many units apart are the points (8, 11) and (-1, -1)?

Answer 1

Given two points \((x_1, y_1)\) and \((x_2, y_2)\), the distance between these points is given by the formula:
\[d=\sqrt{(x_2-x_1)^2+(y_2-y_1)^2}\]
Substitute and solve

Answer 2

It has been a long time since I have done this, can you explain it?

Answer 3

Because the distance formula gives you the distance apart from 2 coordinates, so
\[d=\sqrt{(-1-8)^2+((-1)-11)^2}\]
do you understand it now?

Answer 4

not quite sorry:( it has been a long time