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kiran tribhuvan Grade:

i did nt underst00d the f0II0wing Iine given in the n0tes

Let P(x1, y1) and Q(x2, y2) be two neighbouring points on the parabola y2 – 4ax. Then the equation of the line joining P and Q is

       y – y1 = (y2-y1) / (x2-x1 ) (x – x1) …… (1)


7 years ago

Answers : (1)

Badiuddin askIITians.ismu Expert
147 Points

Dear kiran

we know that slope of the line joining by two point is 

 m =y2 -y1 /x2 -x1


now we know that equation of line passes through a point and slope   m is

 y-y1 =m( x-x1)

 now put the value of m and you will get the desired result


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7 years ago
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