Find the value of `k` for which the point `(1,\ -2)` lies on the graph of the linear equation `x-2y+k=0`

If the point (5,2) lies on the graph of the linear eqaution kx +5y =10 k find k

If the point (2,\ -2) lies on the graph of the linear equation 5x+k y=4 , find the value of k

If the point (2,\ -2) lies on the graph of the linear equation 5x+k y=4 , find the value of k

If the point (a ,\ 2) lines on the graph of the linear equation 2x-3y+3=0 , find the value of a

If the point (a,2) lines on the graph of the linear equation 2x-3y+3=0, find the value of a

If the point (a,2) lies on the graph of the equations 2x=3y-8, find the value of a.

Find the value of k for which the graph of the simultaneous linear equations 3x+2y-7=0 and 9x+ky-21=0, coincide.

Find the range of k if the point (1, 1, k) lies on the origin side of the plane 3x-2y+6z-3=0 .

Find the values of k for which the roots are real and equal in the following equations: (i) (k+1)x^2-2(k-1)x+1=0 (ii) 2x^2+k x+3=0