Question

if A, O and B are confident (4x-25) (x-10) (x+5)

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Answer 1

Answer:

Correct option is A)

Let A(x,−1)B(2,1) and C(4,5)

They are collinear if slope of AB= slope BC

Slope of AB=

2−x

1−(−1)

=

2−x

2

Slope of BC=

4−2

5−1

=

2

4

2−x

2

=2

2−x=1

∴x=1