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Written Homework for 12.4 – 12.5
Neatness and organization is important. Use proper notation throughout and show work where needed. Be sure
to label all graphs clearly, including axes, intercepts, and important values (if possible).
1. Sketch an accurate graph of (, )
f xy
a b
x y
=− +
where
a
= your age and
b
= the last nonzero digit in your
phone number.
2. A plane passes through the points
, (0
, and (1,
.
(2,1,0)
,1,3)
0,1)
A. Find two vectors lying on the plane.
B. Find a vector perpendicular to the plane.
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 Spring '10
 DICKSON
 Math

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