" (4) "7x+3y=15:12y-5x=39

Solve the following simultaneous equations using Cramer's rule. 7x+3y=15,12y-5x=39 .

Solve the following equations by Cramer's method. 7x + 3y = 15, 12y - 5x = 39

Solve the following equations by Cramer’s method. 7x + 3y = 15 , 12y - 5x = 39

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

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

Evaluate : (viii) (7x + 15y) ( 5x - 4y)

Find the co-ordinates of the incentre of the triangle formed by the lines y-15=0 , 12y-5x=0 and 4y+3x=0 .

A point equidistant from the lines 4x+3y+10=0, 5x-12y+26=0 and 7x+24y-50=0 is :