Given:
[tex]\begin{gathered} y=4x \\ 3x-7=y \end{gathered}[/tex]
Required:
To solve the given equations by using substitution method.
Explanation:
Consider the given two equation
[tex]\begin{gathered} y=4x------(1) \\ 3x-7=y--------(2) \end{gathered}[/tex]
Substitute equation (1) in (2), we get
[tex]\begin{gathered} 3x-7=4x \\ 3x-4x=7 \\ -x=7 \\ x=-7 \end{gathered}[/tex]
Put x in (1), we get
[tex]\begin{gathered} y=4(-7) \\ \\ y=-28 \end{gathered}[/tex]
Final Answer:
[tex](-7,-28)[/tex]
