[x+2y=100,2x-y<=0,2x+y>=200,x,y<=0],[" Under the following constraints "Z=-x+2y" Maximize "],[x>=3,x+y>=5,x+2y>=6,y>=0]

" Minimise "Z=4x+8y" subject to "200x+100y>=4000,x+2y>=50,40x+40y>=1400,x>=0,y>=0" minimum value of "z" is "

The figure formed by the lines 2x-5y+4=0, 5x+2y+7=0, 2x-5y+3=0, 5x+2y-6=0 is

Maximise Z=x+2y, subject to the constraints: x>=3,x+y>=5,x+2y>=6,y>=0

The figure formed by the lines 2x+5y+4=0,5x+2y+7=0,2x+5y+3=0 and 5x+2y+6=0 is

The figure formed by the lines 2x+5y+4=0, 5x+2y+7=0, 2x+5y+3=0 and 5x+2y+6=0 is

" Minimise and Maximise "z=-x+2y" subject to "x>=3,x+y>=5,x+2y>=6

Classify the following pairs of lines as coincident,parallel or intersecting: x+2y-3=0 and -3x-6y+9=0x+2y+1=0 and 2x-4y+3=03x-2y+5=0 and 2x+y-9=0

Solve x-2y=6 3x-6y=0

Solve the following system of equations by matrix method : 5x+7y+2=0 4x+6y+3=0 5x+2y=3 3x+2y=5 3x+4y-5=0 x-y+3=0 3x+y=19 3x-y=23 3x+7y=4 x+2y=-1 3x+y=7 5x+3y=12

Minimise and maximise Z=x+2y subject to x+2y ge 100, 2x-y le 0, 2x+y le 200 , x,y ge 0 .