CAN YOU PLEASE HELP, I AM STUCK..THANKS

FIND THE DISTANCE BETWEEN (-3,2) AND (1,4)
FIND THE DISTANCE BETWEEN (-4,0) AND -5,-3)
DETERMINE WHETHER THE ROOT OF 77 IS RATIONAL OR IRRATIONAL.

THANKS IN ADVANCE, I APPRECIATE ALL OF THE HELP....

No algebra teacher seems to be online this morning. Please use the following links to find explanations; then repost showing your work. Someone will be happy to give you feedback.

http://www.themathpage.com/
Scroll down to find algebra.

http://www.aaamath.com/

http://www.freemathhelp.com/

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