Find the slope of the line through each pair of points. pleae help me quick 1) (16, −14), (−14, 6)

2) (−19, 20), (0, 20)

3) (20, −19), (20, −9)

4) (13, −8), (−17, −18)

5) (2, 9), (1, 10)

6) (−3, 12), (−11, −12)​

Problem 3 a bank charges a service fee of $7.50 per month for a checking account. a bank account has $85.00. if no money is deposited or withdrawn except the service charge, how many months until the account balance is negative