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If slope of a line is 2/3 then find the slope of line perpendicular to it.

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in Mathematics - Class 11 by (789k points)
If slope of a line is 2/3 then find the slope of line perpendicular to it.

(a) -3/2

(b) 3/2

(c) 2/3

(d) -2/3

I got this question in semester exam.

My question is based upon Various Forms of the Equation of a Line in division Straight Lines of Mathematics – Class 11

1 Answer

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The correct answer is (a) -3/2

Best explanation: If lines with slopes m1 and m2 are perpendicular then m1 * m2 = – 1.

If m1 = 2/3 then m2 = -1 / (2/3) = -3/2.

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