Plz do 3,4,5 asap

number 3 says to write a formula for the line that goes through point and then the question

number 4 says find coordinates of midpoint s of a line segment ab where a( 1,2) and b (-1,4)

number 5 says to find the probability that a 6 sided dice fell on

a) even number

b) number from 1 to 6 (including)