Q. 144.7( 3 Votes )
Using the method of slopes show that the points A(4, 8), b(5, 12), C(9, 28) are collinear.
Answer :
We have three points given A(4, 8), b(5, 12), C(9, 28)
To Prove: Given Points are collinear
Proof: A(4, 8), B(5, 12), C(9, 28)
The formula used: The slope of the line = 
The slope of line AB = 
AB = 
The slope of line BC = 
BC = 
= 4
The slope of line CA = 
Here, AB = BC = CA
Hence, The Given points are collinear.
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