[2x-v=-2],[3x+4y=3quad [" NCERT "]

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

3x-y=7; 2x+4y=0

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

3x + 4y = 10, 2x-2y = 2

The area of the parallelogram formed by lines 2x-y+3=0, 3x+4y-6=0,2x-y+9=0, 3x+4y+4=0 is (in sq units)

If |(3x+4y,-3),(2,x+2y)|=|(7,-3),(2,3)| then x and y are

Classify the following pairs of lines as coincident, parallel, perpendicular or intersecting : (i) 6x+14y-16=0 , 12x+28y-32=0 (ii) 3x-4y=8 , 3x+4y=11 (iii) 5x-2y=7 , 2y-5x=-7 (iv) 4x+7y=19 , 7x-4y=-2 (v) x-2y=7 , 4y-2x=13

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

Solve for (x,y) : 2x-3y =5 , 3x+4y = -1 .