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Measurement and Geometry
Activity 8: Drip, Drip, Drip
45
© 1998 T
EXAS
I
NSTRUMENTS
I
NCORPORATED
f. Now select the first point on the line.
" until
X=1
$ until Y=4
b to select the first point on the line
g. Select the second point on the line.
" until
X=2
$ until Y=8
b to select the second point
The screen shows the expression for the line.
h. Save the line.
b
4. Turn on
Trace
.
* ).
Ask: Was your prediction correct?
5. Investigate if the drip were half as fast. Use the same
procedure as above to place a manual-fit line on the
graph and paste the expression into the Y= editor.
Extensions
If there are approximately 55,000,000 homes in North
America and each has one dripping faucet, how much
water is wasted per day? Per year?