Find the values of k for which the line `(k-3)x-(4-k^2)``y+k^2-7k+6=0`is
(a) Parallel to the xaxis,
(b) Parallel to the y axis,
(c) Passing through the origin.

Explanation

Given `(k-3)x-(4-k^2)``y+k^2-7k+6=0`


(a) parallel to `x` axis


`:.` y=p where p is a constant


`:.` no `x` term


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