Home equity line interest Kai and Ivy Harris have a home with an appraised value of $240,000 and a mortgage balance of only $120,000. Given that an S&L is willing to lend money at a loan-to-value ratio of 75 percent, how big a home equity credit line can Kai and Ivy obtain? $ How much, if any, of this line would qualify as tax-deductible interest if their house originally cost $100,000? $