Explain the distance formula. Then use it to calculate the distance between A(1,1) and B(7,-7). Any help please.

Answer 1

you know the Pythagorean Theorem, right?

The hypotenuse is the distance between A and B.

The horizontal distance from A to B is (7-1)
The vertical distance is (-7-1)

Using the Pythagorean theorem, the length of the hypotenuse (the distance AB) is

√((7-1)^2 + (-7-1)^2) = 10

Answer 2

Yes