Question

Line $\frac{x-2}{3}=\frac{y-3}{4}=\frac{z-4}{0}$ is

• A. parallel to yz-plane
• B. parallel to zx-plane
• C. perpendicular to z-axis
• D. parallel to z-axis

Answer 1

Answer: (C)

$\frac{x-2}{3}=\frac{y-3}{4}=\frac{z-4}{0}$
Taking first and third terms
$\frac{x-2}{3}=\frac{z-4}{0}$
$\Rightarrow$ $z-4=0$
$\Rightarrow$ $z=4$
Hence, given line is perpendicular to z-axis.