" 3."3x+4y<=12

Evaluate : (i) (2x + 3y) ( 3x +4y)

2x + 3y = 0 , 3 x + 4y = 5 .

If x : y = 3 : 4 find (3x + 4y) : (5x + 6y) .

Solve, using cross - multiplication : 4x + 3y = 17 3x - 4y + 6 =0

Find the values of 4x + 3y = 24 , 3x + 4y = 25

Solve the following simultaneous equations : 4x+ 3y =11, 3x + 4y = 10

What will be the circumcentre of a triangle whose sides are 3x - y + 3 = 0, 3x + 4y + 3 = 0 and x + 3y + 11 = 0?

4x + 3y = 17.3x-4y + 6 = 0