AP EAMCET · Maths · Straight Lines
If the line \(2 x-3 y+5=0\) is the perpendicular bisector of the line segment joining \((1,-2)\) and \((\alpha, \beta)\), then \(\alpha+\beta=\)
- A 7
- B 1
- C -1
- D -7
Answer & Solution
Correct Answer
(A) 7
Step-by-step Solution
Detailed explanation
\(-15 x^2+4 x y+4 y^2=0 \Rightarrow(5 x+2 y)(-3 x+2 y)=0\) \(\Rightarrow 5 x+2 y=0,-3 x+2 y=0, x=\alpha\) On solving, we get co-ordinates of triangle…
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