Show graphically that following system of equations has infinitely many solutions: `x-2y=5;\ \ \ 3x-6y=15`

Show graphically that following system of equations has infinitely many solutions: x-2y+11=0;\ \ \ 3x-6y+33=0

Show graphically that following system of equations has infinitely many solutions: x-2y+11=0;\ \ \ 3x-6y+33=0

Show graphically that following system of equations has infinitely many solutions: x-2y=5;quad 3x-6y=15

Show graphically that following system of equations has infinitely many solutions: 2x+3y=6;\ \ \ 4x+6y=12

Show graphically that following system of equations has infinitely many solutions: 3x+y=8;\ \ \ 6x+2y=16

Show graphically that following system of equations has infinitely many solutions: x-2y+11=0;quad 3x-6y+33=0

Show graphically that following system of equations has infinitely many solutions: 2x+3y=6;quad 4x+6y=12

Show graphically that following system of equations has infinitely many solutions: 3x+y=8;quad 6x+2y=16

Show graphically that following system of equations is in-consistent (i.e. has no solution): x-2y=6;\ \ \ 3x-6y=0

Find the values of a and b for which the following system of equations has infinitely many solutions: 2x-(2a+5)y=5,\ \ \ \ (2b+1)x-9y=15