" 9."x+y<=10,3x+y<=15,x>=0,y>=0

Solving graphically,show that the following L.PP has an infinite number of optimal solutions.Minimize Z=x+y subject to the constraints 5x+9y =2,x =0,y>=0 Find also the minimum value of the objective function Z.

x+y=0,2x-y=9

Solve the following system of linear inequation graphically: x+y>=1,7x+9y =0,y>=0

Show that the solution set of the following linear in equations is an unbounded set: x+y>=9,3x+y>=12,x>=0,y>=0

The orthocentre of the triangle formed by the lines x-2y+9= 0, x + y -9 =0, 2x -y-9=0is

(3) / (x) - (1) / (y) + 9 = 0 (2) / (x) + (3) / (y) = 5, (! = 0, y! = 0)

The area bounded by the curve x=3y^2-9 and the line x=0,y=0 and y=1 is

Solve the following system of equations: 2/x+3/y=9/(x y),\ \ \ 4/x+9/y=(21)/(x y),\ \ where x!=0,\ y!=0