Question

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

Answer 1

You are basically trying to find the length of a line.

Answer 2

the same idea also applied to the y axis too

Answer 3

and finally we use pythagoras theorem (pythagoras formula to find that diagonal line)

Answer 4

Shall we try now;

distance between
A(1,1) (x1,y1)
and
B(7,-7) (x2,y2)

Answer 5

So it would be 6^2+-8^2 which is -28. And it would be the square root of -28?