Question

Pythagoras thereom ? help

Answer 1

It looks like you have to do distance formula. It's basically this:

D = $\sqrt{(y_{2}-y{1})^{2} + (x_{2}-x{1})^{2} }$ (ignore the A, i dont know how to get rid of it sorry)

I would then plug in the points of A(1,7) and B(10,3).

D = $\sqrt{(7-3)^2 + (10-1)^2 }$

Then I would get the square root of 4^2 + 9^2

= square root of 16 + 81

= square root of 97

So the length of AB would be the square root of 97