Question:
If the straight line, $2 x-3 y+17=0$ is perpendicular to the line passing through the points $(7,17)$ and $(15, \beta)$, then $\beta$ equals :-
Correct Option: , 4
Solution:
$\frac{17-\beta}{-8} \times \frac{2}{3}=-1$
$\beta=5$