[3x-7y=7],[11times5y=87]

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

If [[x,x-y],[2x+y,7]]=[[3,1],[8,7]] then find the value of y.

If 17x -5y=8 and 14 x -7y =-7, what is the value of 3x + 2y ?

Solve by the method of elimination 2x-y=3,3x +y=7 (ii) x-y=5, 3x+ 2y = 25 (iii) (x)/(10 ) +(y)/(5) =14 ,(x)/( 8) + (y)/( 6) =15 (iv) 3(2x+y) =7xy,3 (x+3y ) =11xy (v) (4)/(x) +5y =7,(3)/(x) +4y =5 (vi) 13x +11y = 70,11x +13y =74

If [(x,x-y),(2x+y,7)]=[(3,1),(8,7)] write the value of y.

If [[3,-2],[-1,2]][[x],[y]]=[[11],[-5]] then 3x+7y=

If x + y =7 and 3x-2y=11,then

Solve the following system of equations using Cramers rule. 5x-7y+z=11 ,6x-8y-z=15 and 3x+2y-6z=7

Solve the following system of equations using Cramers rule. 5x-7y+z=11 , 6x-8y-z=15 and 3x+2y-6z=7