#### Answer

5

#### Work Step by Step

First of all, we see that point C is $(-5,3)$, for it is C reflected across the y axis. Now, we can find the height and the base of the triangle:
$ b = 5 - (-5) =10$
$h = 3 - 1 = 2$
Thus:
$ A = (1/2)(2)(5) = 5$

Published by
Brooks Cole

ISBN 10:
1439047901

ISBN 13:
978-1-43904-790-3

5

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