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A line passes through (x1,y1)and (h , k...

A line passes through `(x_1,y_1)`and `(h , k)`. If slope of the line is m, show that `k-y_1=m(h-x_1)`.

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The slope of the line passing through `( x_1, y_1)` and (h,k) is ` (k-y_1) div (h-x_1)`
It is given that the slope of the line is m.
` (k-y_1) div (h-x_1)=m`
`k-y_1=m (h -x_1)` ...
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