Assertion : The four straight lines given by 12x 2 + 7xy – 12y 2 = 0 and 12x 2 +7xy –12y…
Mathematics · JEE Advanced · NTA Exams — Co-ordinate Geometry
Assertion : The four straight lines given by
12x2 + 7xy – 12y2 = 0 and 12x2 +7xy –12y2 –x +7y –1 =0 are the sides of a square.
Reason : The lines represented by general equation of second degree ax2 + 2 hxy + by2 + 2 gx + 2 f y + c = 0 are perpendicular if a + b = 0 .
12x2 + 7xy – 12y2 = 0 and 12x2 +7xy –12y2 –x +7y –1 =0 are the sides of a square.
Reason : The lines represented by general equation of second degree ax2 + 2 hxy + by2 + 2 gx + 2 f y + c = 0 are perpendicular if a + b = 0 .
- If Assertion is true, Reason is true, Reason is a correct explanation for Assertion.
- If Assertion is true, Reason is true, Reason is not a correct explanation for Assertion.
- If Assertion is true, Reason is false.
- If Assertion is false, Reason is true.
Answer
(B) If Assertion is true, Reason is true, Reason is not a correct explanation for Assertion.
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