Determine The Ratio In Which y – x + 2 = 0 Divides The Line Joining (3, –1) And (8, 9).

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Question

Determine the ratio in which y – x + 2 = 0 divides the line joining (3, –1) and (8, 9).

Solution

Correct option is

2 : 3

 

Suppose the line y – x + 2 = 0 divides the line segment joiningA(3 –1) and B(8, 9) in the ratio λ : 1 at point P, then the coordinates of the point P are 

But P lies on y – x + 2 = 0 therefore 

       

     

So, the required ratio is 2/3 : 1, i.e., 2 : 3 (internally) since here λ is positive.

 

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