jaylajj26 jaylajj26
  • 23-12-2020
  • Mathematics
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y=x+3
2x-y=-1
write solution as ordered pair

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ChefTopeau
ChefTopeau ChefTopeau
  • 23-12-2020

The first equation tells you that [tex]y=x+3[/tex]. If you substitute this expression for [tex]y[/tex] in the second, we have

[tex]2x-(x+3)=-1 \iff x-3=-1 \iff x=2[/tex]

And we can deduce [tex]y=x+3=2+3=5[/tex]

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