[5x-4y+8=0," (ii) "9x+3y+12=0],[7x+6y-9=0,18x+6y+24=0]

9x+3y+12=0,18x+6y+24=0

5x - 4y + 8 = 0 7x + 6y - 9= 0

On comparing the ratios (a_1)/(a_2),(b_1)/(b_2) and (c_1)/(c_2) , and without drawing them, find out whether the lines representing the following pairs of linear equations intersect at a point, are parallel or coincide: (i) 5x-4y+8=0;\ \ \ \ 7x+6y-9=0 (ii) 9x+3y+12=0;\ \ \ 18 x+6y+24=0 (iii) 6x-3y+10=0;\ \ \ 2x-y+9=0

On comparing the ratios (a_(1))/(a_(2)),(b_(1))/(b_(2)) and (c_(1))/(c_(2)), and without drawing them,find out whether the lines representing the following pairs of the equations intersect at a point,are parallel or coincide: 8=0;quad 7x+6y-9=0 (ii) 9x+3y+12=0;quad 18x+6y+24=0 (iii) 6x-3y+10=0;quad 2x-y+9=0

Solve fir x and y: [5x-4y+8=0],[7x+6y-9=0]

Solve 9x+3y+12=0 18x+6y+24=0

Solve by cross-multiplication method. (i) 8x-3y=12,5x=2y +7 (ii) 6x+ 7y -11 =0, 5x+ 2y =13 (iii) (2)/(x)+(3)/(y) =5, (3)/(x) -(1)/(y) +9=0

(i) Z = 20x + 10y x + 2y le 28, 3x + y le 24, x ge 2, x, y ge 0 (ii) Z = 7x + 10y 4x + 6y le 240, 6x + 3y le 240, x ge 10, x ge 0, y ge 0 (iii) Z = 22x + 44y subject to the constraints: x + y ge 3, 3x + 8y le 24, x - y ge 0, x, y ge 0 .

(i) Solve 5x-4y+8 7x+6y-9