" (i) समीकкण "5x-2y=7" का पिक हल "x=3,y=4" है। "

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

5x + 2y = 31 3x + 7y = 36

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

If x - y = 4 and xy = 45, then the value of x^3-y^3 is : यदि x - y = 4 तथा xy = 45 है, तो x^3-y^3 का मान होगा :

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

If x:y = 3:2 and x+y = 90, then the value of (x-y) is: यदि x:y = 3:2 और x+y = 90 है, तो (x-y) का मान है:

If x + y = 7 and xy = 10, then the value of x^3+y^3 is: यदि x + y = 7 तथा xy = 10 है, तो x^3+y^3 का मान क्या होगा ?