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Solve the system by Substitution. 3x-y=-1 y= 2x-1
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4 votes
Solve the system by Substitution.
3x-y=-1
y= 2x-1

User Maarten Derickx
by
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2 Answers

5 votes

(-2,-5)...............

User Executeinstaller
by
4.6k points
1 vote
1.) Fill in y=2x-1 into the first equation
3x-(2x-1)=-1
3x-2x+1=-1
x+1=-1
x=-2

2.) Fill in x=-2 into y=2x-1
y=2(-2)-1
y=-4-1
y=-5

Your answer is (-2,-5) or x=-2 and y=-5
User Tfwright
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4.7k points
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