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Question

Assertion :Three points A(x1,y1), B(x2,y2) and C(x3,y3) are collinear if x1+x2+x3=y1+y2+y3. Reason: The points A(x,x), B(7,5), C(5,3) are collinear if x=1.

A
Both Assertion and Reason are correct and Reason is the correct explanation for Assertion
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B
Both Assertion and Reason are correct but Reason is not the correct explanation for Assertion
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C
Assertion is incorrect but Reason is correct
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D
Both Assertion and Reason are incorrect
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Solution

The correct option is C Assertion is incorrect but Reason is correct
Assertion is False as the condition for collinearity is ∣ ∣x1y11x2y21x3y31∣ ∣=0, using in reason we have ∣ ∣xx1751531∣ ∣=0
4x4=0x=1 and reason is True.

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