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Substitute for 7x-9=y -5x+7y=-19
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3 votes
Substitute for 7x-9=y
-5x+7y=-19

User Dushkin
by
8.6k points

1 Answer

4 votes

Answer:

(1,-2)

Explanation:

y=7x-9

-5x+7(7x-9)=-19

-5x+49x-63=-19

44x=44

x=1

y=7-9

y=-2

User Ben ODay
by
8.0k points
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