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What is the solution of the system ? Use substitution y=2x+7 y=x-1
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What is the solution of the system ? Use substitution y=2x+7 y=x-1

User Chad Brewbaker
by
7.4k points

1 Answer

8 votes
(-8,-9)

Step-by-step explanation:

y=2x+7 ; y=x-1

x-1=2x+7

x-1-7=2x+7-7

x-8=2x

x-x-8=2x-x

x=-8

y=x-1

y=-8-1

y=-9
User Daemes
by
8.1k points
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