Question

find the value of k for which the points (7,2) (5,1) (3,k) are collinear​

Answer 1

Step-by-step explanation:

Point A(7,−2),B(5,1) and C(3,k) are collinear if

Slope of AB= Slope of BC

5−7

1−(−2)

=

3−5

k−1

−2

3

=

−2

k−1

⇒k−1=3

k=3+1=4

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