The line through `(h ,3)a n d\ (4,1)` intersects the line k `7x-9y-19=0` at right angle. Find the value of `hdot`

Explanation

The slope of the line passing through points `h,3)` and` (4,1) `is :


`m_1​=(1−3)/(4−h)​=(-2)/(4−h)​`


The slope of the line `7x−9y−19=0 is m_2​=(7/9)​`


Given that two lines are perpendicular.


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