The value of p, for which the points A(3, 1), B(5, p) and C(7, –5) a

1.	The value of p, for which the points A(3, 1), B(5, p) and C(7, –5) are collinear, is (a) –2 (b) 2 (c) –1 (d) 1
Answer» Since, points are collinear, then area of triangle formed by these points is zero. \(\frac{1}{2} \|3(p+5)+5(-5-1)+7(1-p)\|\) p = -2.

The value of p, for which the points A(3, 1), B(5, p) and C(7, –5) are collinear, is (a) –2 (b) 2 (c) –1 (d) 1

Answer»

Since, points are collinear, then area of triangle formed by these points is zero.

\(\frac{1}{2} |3(p+5)+5(-5-1)+7(1-p)|\)

p = -2.

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The value of p, for which the points A(3, 1), B(5, p) and C(7, –5) are collinear, is (a) –2 (b) 2 (c) –1 (d) 1

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