`2x+3y=7,3x-2y=4`

solve for x and y - 2x+3y=7 3x-4y=2

2x-3y=13; 7x-2y=20

Solve for x and y - 2x+3y=5 3x+4y=7

(6) 2x-3y=4 ; 3y-x=4

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

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

Solve for x and y:3x^(2)-5y^(2)=7,3xy-4y^(2)=2