If the mean of `6,\ 7,\ x ,\ 8,\ y ,\ 14` is 9, then (a) `x+y=21` (b) `x+y=19` (c) `x-y=19` (d) `x-y=21`

If the mean of 6, 7, x, 8, y, 14 is 9,then x + y = . . . .

In the given figure, if A B || C D , the values of x\ a n d\ y are (a) x=21 ,\ y=28 (b) x=21 ,\ y=38 (c) x=38 ,\ y=21 (d) x=22 ,\ y=38

If 5x+y=19 and x-3y=7 , then x+y=

9 taken away from the sum of x\ a n d\ y is (a) x+y-9 (b) 9-(x+y) (c) (x+y)/9 (d) 9/(x+y)

The locus of the centre of all circles passing through (2, 4) and cutting x^2 + y^2 = 1 orthogonally is : (A) 4x+8y = 11 (B) 4x+8y=21 (C) 8x+4y=21 (D) 4x-8y=21

The locus of the centre of all circles passing through (2, 4) and cutting x^2 + y^2 = 1 orthogonally is : (A) 4x+8y = 11 (B) 4x+8y=21 (C) 8x+4y=21 (D) 4x-8y=21

The equation of the line that passes through (10 ,-1) and is perpendicular to y=(x^2)/4-2 is (a) 4x+y=39 (b) 2x+y=19 (c) x+y=9 (d) x+2y=8

To draw the graph of 6x + 7y = 19, find x when y =1

If the mean of the number 6,y,7,x and 14 is 8. Express y in terms of x.

The equation of the line that passes through (10 ,-1) and is perpendicular to y=(x^2)/4-2 is (a)4x+y=39 (b) 2x+y=19 (c)x+y=9 (d) x+2y=8