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  4. If the straight line, 2x - 3y + 17 = 0 is perpendicular to the line passing through the points (7, 17) and (15, β), then β equals :

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Q. If the straight line, $2x - 3y + 17 = 0$ is perpendicular to the line passing through the points $(7, 17)$ and $(15, \beta$), then $\beta$ equals :

JEE MainJEE Main 2019Straight Lines

Solution:

$\frac{17 - \beta }{ - 8} \times \frac{2}{3} = - 1$