-8quad " 10."3x-2y<=x+y-8

x+7y=10 3x-2y=7

Find the values of (x-y) , if (i) 3x + 4y = 11 , 4x + 3y = 10 (ii) 3x + 2y = 8 , 2x + 3y = 7

Short Questions: Calculate the means of the variables x and y, given the regression lines as x + 6y=8 and 3x + 2y = 10 .

Solve the following system of linear equations by matrix method : 4x + 3y + z = 10, 3x - y + 2z = 8, x - 2y - 3z - 10.

Find graphically the solution sets of each of the following systems of inequalities : x + y le 6 2x + 5y ge -8 3x + 8y le 9 10x + 12y le 7 8x + 7y le 14 x, y ge 10

Find the values of (x+y ) , if (i) 3x + 4y = 11 , 4x + 3y = 10 (ii) 5x - 2y = 4 , x + 8y = 26

The angle between planes 3x-6y+2z=8and 2x+2y-2z=10 is