" (i) "x+y=4

The product of x\ a n d\ y is decreased by 4 is written as (a) 4-x y (b) x\ (y-4) (c) x y-4 (d) x y+4

If (4)^(x+y)=1 and (4)^(x-y)=4 the the value of x and y will be respectively

The equation of common tangent(s) to the parabola y^2=16 x and the circle x^2+y^2=8 is/are x+y+4=0 (b) x+y-4=0 x-y-4=0 (d) x-y+4=0

The straight lines x + y = 0 , 5 x + y = 4 and x + 5y = 4 form _

The equation to a pair of opposite sides of a parallelogram are x^2-5x+6=0 and y^2-6y+5=0 . The equations to its diagonals are x+4y=13 ,y=4x-7 (b) 4x+y=13 ,4y=x-7 4x+y=13 ,y=4x-7 (d) y-4x=13 ,y+4x-7

The equation to a pair of opposite sides of a parallelogram are x^2-5x+6=0 and y^2-6y+5=0 . The equations to its diagonals are x+4y=13 ,y=4x-7 (b) 4x+y=13 ,4y=x-7 4x+y=13 ,y=4x-7 (d) y-4x=13 ,y+4x-7

The equation to a pair of opposite sides of a parallelogram are x^2-5x+6=0 and y^2-6y+5=0 . The equations to its diagonals are x+4y=13 ,y=4x-7 (b) 4x+y=13 ,4y=x-7 4x+y=13 ,y=4x-7 (d) y-4x=13 ,y+4x-7

If (x+y) = 12 and (x-y) = 4 then (2x - 4y) = ?

x + y = 14x-y = 4