Question

Line passing through (1, 2) and (2, 5) is.

• A. $3 x - y + 1 = 0$
• B. $3 x + y + 1 = 0$
• C. $y - 3 x + 1 = 0$
• D. $3 x + y - 1 = 0$

Answer 1

Answer: (C)

$y - 3 x + 1 = 0$

Answer 2

Required equation is

$y - 2 = \frac { 5 - 2 } { 2 - 1 } ( x - 1 ) \Rightarrow y - 3 x + 1 = 0$.