What is the RULE for the subtraction of integers? Picture attached and pls help now

What is the equation of a line passing through the point (6,1) and parallel to the line whose equation 3x=2y+4

Student price tickets to a movie are $1 and non student tickets are $2. 350 tickets are sold and the total amount made is $450. how many non student tickets were sold ? a) 100 b) 150 c) 200 d)250

What is the sum of these mixed numbers 4 2/3+ 3 1/9