Aline passes through the points whose coordinates are (h, 4h) and (3h, 2h). assuming that h is not 0, find the slope of the line.

Rose and andrew are financing $128,000 to purchase a condominium. they obtained a 15-year, fixed-rate loan with a rate of 5.05%. they have been given the option of purchasing up to four points to lower their rate to 4.81%. how much will the four points cost them?