The cartesian equation of a line is \( x=\ \ ay+b,\ z=cy+d \). Its direction ratios are
Answer & explanation
Correct answer: option 1
The correct answer is Option (1) → \( a,1,c \)
Writing each of x − b and z − d in terms of y, the line in symmetric form is
\( \displaystyle \frac{x-b}{a}=\frac{y-0}{1}=\frac{z-d}{c} \)
So the direction ratios are a, 1, c.