`2x-y=4 ; 5x+4y=1`

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

If (3x -4y) : (2x -3y) = (5x -6y) : (4x -5y) , find : x : y .

1 + 5x + 3y = 9 2x 3y = 12 X = (x, y) - 4

If [2x+y,4x,5x-7 4x]=[7 7y-13 y x+6] , then the value of x+y is x=3 , y=1 (b) x=2 , y=3 (c) x=2 , y=4 (d) x=3 , y=3

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

If (5x - 3y) : (2x + 4y) = 11 : 12 , then find x : y .

Solve the following pair ofequations by substitution method.(3)/(2)x-y=(1)/(4);x+(1)/(2)y=1 and 3x+y=4,2(y-5)=-5x