In order to find the value of y when x = -1. in the given equations,
we put or substiture the value of x = 1 into the given equations
To solve for y in the first equation
[tex]\begin{gathered} y=-3x+4 \\ y=-3(-1)+4 \\ y=3+4 \\ y=7 \end{gathered}[/tex]
To solve for y in the second equation
[tex]\begin{gathered} y=\frac{3}{5}x-6 \\ y=\frac{3}{5}(-1)-6 \\ y=-\frac{3}{5}-6 \\ y=-6\frac{3}{5} \end{gathered}[/tex]
To solve for y in the third equation
[tex]\begin{gathered} 6x=4y-2 \\ 6(-1)=4y-2 \\ -6=4y-2 \\ 4y=-6+2 \\ 4y=-4 \\ y=-\frac{4}{4} \\ y=-1 \end{gathered}[/tex]
To solve for y in the fourth equation:
[tex]\begin{gathered} 5x+2y=7 \\ 5(-1)+2y=7 \\ -5+2y=7 \\ 2y=7+5 \\ 2y=12 \\ y=6 \end{gathered}[/tex]
