[tex]\quad \huge \quad \quad \boxed{ \tt \:Answer }[/tex]

[tex]\qquad \tt \rightarrow \:x= 0 [/tex]

[tex]\qquad \tt \rightarrow \:y= -4[/tex]

____________________________________

[tex] \large \tt Solution \: : [/tex]

[tex] \textsf{The equations are :} [/tex]

[tex]\qquad \sf  \dashrightarrow \: 3x - y = 4 \: \: \: \: \: - (1)[/tex]

[tex]\qquad \sf  \dashrightarrow \: y = 6x - 4 \: \: \: \: \: - (2)[/tex]

[tex] \textsf{Next, put value of y from equation (2)} [/tex][tex] \textsf{in equation (1) and proced} [/tex] ~

[tex]\qquad \sf  \dashrightarrow \: 3x - y = 4[/tex]

[tex]\qquad \sf  \dashrightarrow \: 3x - (6x - 4) = 4[/tex]

[tex]\qquad \sf  \dashrightarrow \: 3x - 6x + 4 = 4[/tex]

[tex]\qquad \sf  \dashrightarrow \: - 3x = 4 - 4[/tex]

[tex]\qquad \sf  \dashrightarrow \: - 3x = 0[/tex]

[tex]\qquad \sf  \dashrightarrow \: x = 0[/tex]

[tex] \textsf{Now, put x = 0 in equation (2) to find } [/tex][tex] \textsf{the value of y} [/tex] ~

[tex]\qquad \sf  \dashrightarrow \: y = 6x - 4[/tex]

[tex]\qquad \sf  \dashrightarrow \: y = 6(0) - 4[/tex]

[tex]\qquad \sf  \dashrightarrow \: y = - 4[/tex]