solve the following by graphical method 3x-y=7;x+4y=11
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3x-7=y
now,
x+4*(3x -7)=11
x+12x-28=11
13x=11+28
13x=39
x=3
3*3-y=7
9-y=7
9-7=y
2=y
now,
x+4*(3x -7)=11
x+12x-28=11
13x=11+28
13x=39
x=3
3*3-y=7
9-y=7
9-7=y
2=y
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