17–20 Applications
82501F~1.DOC TI-83 international English Bob Fedorisko Revised: 10/26/05 1:49 PM Printed: 10/27/05 3:04
PM Page 20 of 20
8. Press † to move the cursor onto the function for interest
defined by
X2T and Y2T. Enter 240.
The graph shows that for the 240th payment (X=240), 441.97
of the 800 payment is interest (
Y=441.97).
9. Press y [QUIT] y [FINANCE] 9 to paste 9:bal( to the home
screen. Check the figures from the graph.
At which monthly payment will the principal allocation surpass
the interest allocation?
Computing and Graphing Mortgage Payments (cont.)
Procedure
(continued)
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