Q17 of 112 Page 168

The equation of the straight line passing through the origin and perpendicular to the straight line 2x + 3y – 7 = 0 is

The straight line is passing through the origin and perpendicular to the straight line 2x + 3y – 7 = 0.


Since the straight line is perpendicular to the straight line


2x + 3y – 7 = 0,the product of their slopes will be equal to –1.


Slope of 2x + 3y–7 = 0 is m1.



slope of the perpendicular line will be m2.


Now m1×m2 = –1




The equation of the line passing through (x1,y1) and slope as m is:


(y–y1) = m(x–x1)


The equation of the line passing through the origin(0,0) and slope as is:



2(y–0) = 3(x–0)


2y = 3x–0


3x–2y = 0

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