I just have a few questions I don't quite understand. Hope you guys can help me.

Calculate the distance between each of the following pairs of points.

1) I(8,2) and J(-2,-3)

This means find the slope of the two points right? My final answer (finding the slopes) was $\displaystyle \frac{1}{2}$. Is that right? Is it even slope at all or is it something completely different.

2) If the line joining A (a,4) and B (2,3) is parallel to the line joining C (-5,3) and D (1,1), find the value of a.

I am guessing to do this you must find the slope then the y or x intercepts?

3) The express $\displaystyle 6\sqrt{2} + \sqrt{32}$ is equivalent to...

It's been so long since I did radicals I have no idea why the teacher would put this on the test... anyways, I'm at a complete blank. From mixed radical to the radical that isn't mixed (Lol, I'm that lost, forgot the name...), it's square the mixed number then add it to the one in the square root right? So $\displaystyle 6\sqrt{2}$ will become $\displaystyle \sqrt{38}$. Right? Wrong? If right, then thanks I know how to solve the problem. If wrong, please tell me the right way :P

Thanks for the help guys.