Question

9. Using distance formula, show that the following set of points are collinear

b) (1/2,2),(2,1)and (5,-1)
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Answer 1

Answer:

D= S× T

Please mark it as brainliast answer.

Answer 2

Step-by-step explanation:

A(1/2,2). B(2,1). C(5,-1)

AB=√{(2-1/2)² + (1-2)²}. =√(9/4 + 1). = √13/2

BC= √{(5-2)² + (-1-1)²}. =√(9+4). =√13

AC =. √{(5-1/2)² + (-1-2)²}. =√(81/4+9). =(3√13)/2

∴ as AB+BC=CA

A,B,C are collinear.