Question
Question: The equation of line through (1, 2) and parallel to 3x – y – 4 = 0 is-...
The equation of line through (1, 2) and parallel to 3x – y – 4 = 0 is-
A
3x – y + 1 = 0
B
x + 3y – 1 = 0
C
x – 3y + 1 = 0
D
3x – y –1 = 0
Answer
3x – y –1 = 0
Explanation
Solution
4)
Sol. Let the equation of line parallel to
3x – y –1 = 0
3x – y + k = 0 …(1)
it passes through (1, 2)
\ 3 –2 + k = 0 Ž k = –1
\ equation 3x – y –1 = 0