From the information given,
selling price of house = 125000
down payment = 20%
Thus,
down payment = 20/100 x 125000 = 25000
Loan amount or mortgage = selling price - down payment = 125000 - 25000
mortgage = 100000
1 mortgage point is 1% of the mortgage amount
2 mortgage points is 2% of the mortgage amount = 2/100 x 100000 = 2000
Thus,
cost of the two points of the mortgage = $2000