## anonymous 5 years ago find the length of the segment from (-3,2) to (5,-1)

1. anonymous

the answer is $\sqrt{73}$, i just have no idea on how to get there

2. anonymous

The length L is given by: $L=\sqrt{(5-(-3))^2+(-1-2)^2}=\sqrt{8^2+(-3)^2}=\sqrt{64+9}=\sqrt{73}$

3. anonymous

So, you take the square of the difference of the x's coordinates , add it to the square of the difference of the y's coordinates. And then, square the whole number. You have to be careful with signs. Does that make sense?

4. anonymous

it does, thank you. is that a specific formula that you're using though?

5. anonymous

nevermind I found it, thanks!

6. anonymous

Yeah. You're welcome, and thanks for the medal.