Solve for x and y. any method can be used

Yibuyiqu asked Jan 5, 2023

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17 votes

Yibuyiqu asked Jan 5, 2023

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21 votes

21) Using the substitution method,

Notice that

$\begin{gathered} y=y \\ \end{gathered}$

Then,

$\begin{gathered} \Rightarrow4x-1=-2x-7 \\ \Rightarrow6x=-6 \\ \Rightarrow x=-1 \end{gathered}$

Finding its corresponding value of y,

$\begin{gathered} x=-1 \\ \Rightarrow y=4(-1)-1=-5 \\ \Rightarrow(x,y)=(-1,-5) \end{gathered}$

Moraei answered Jan 11, 2023

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