JEE MAIN - Mathematics (2019 - 12th January Morning Slot - No. 20)
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 :
$${{35} \over 3}$$
$$-$$ 5
$$-$$ $${{35} \over 3}$$
5
Explanation
$${{17 - \beta } \over { - 8}} \times {2 \over 3} = - 1$$
$$\beta $$ = 5
$$\beta $$ = 5
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