Question

2 all vertical lines are parallel to the
a quadrant
b y - axis
c x - axis
d origin

Explanation:

• A vertical line has an undefined slope and is of the form \(x = k\) (where \(k\) is a constant).
• The \(y -\)axis is the line \(x = 0\).
• Parallel lines have the same "direction". Since vertical lines and the \(y -\)axis have the same orientation (vertical), all vertical lines are parallel to the \(y -\)axis.
• A quadrant is a region in the coordinate plane (divided by the \(x\) and \(y\) axes), not a line. The \(x -\)axis is a horizontal line (\(y=0\)), and the origin is a point \((0,0)\), not a line.

Answer:

B. \(y -\)axis