Please help thank you very much
1. Find the distance (P1,P2) between the points P1 and P2
P1=(-2,4). P2=(2,6) d(P1,P2)=
2. Find the midpoint of the line segment joining the points P1 and P2
P1=(4,-3); P2=(6,5)
3. Find the equation of a line that is parallel to the line x=-14 and contains the (-7,3)