Q12 of 319 Page 23

If three points A(h, 0), P(a, b) and B(0, k) lie on a line, show that:

If these three points lie on a line, the slope will be equal.


So, slope of A(h, 0) and P(a, b) = Slope of A(h, 0) and B(0, k)


Slope of AP


Slope of AB


Now,




bh = - ka + kh


ak + bh = kh


Dividing both sides by kh, we get,



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