[" 4."quad 7x-2y=1],[3x+4y=15]

3x+2y=14; x+4y=7

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

3x-4y=-7,5x-2y=0

0.5x-7y=2 ; 3.4x-4.4y=15.4

5x+2y=4 7x+3y=5

Find the orthocentre of the triangle whose sides are 4x-7y+10=0,x+y=6 and 7x+4y=15

7x+15y =2 x-2y=3

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