#### Answer

y=-15

#### Work Step by Step

m=$\frac{y_2-y_1}{x_2-x_1}$
m=$\frac{-15+15}{10+8}$
m=$\frac{0}{18}$
m=0.
Therefore, the equation is y=-15.

Published by
Brooks Cole

ISBN 10:
0-53449-636-9

ISBN 13:
978-0-53449-636-4

y=-15

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