Which of the following equations represents a line that does not cross the x-axis?
Show answer & explanation
Correct answer: B
Explanation
A line that does not intersect the x-axis is parallel to the x-axis.
The equation of such a line is of the form y = constant.
Among the given options:
x = −5 → Parallel to the y-axis (intersects the x-axis)
y = −4 → Parallel to the x-axis (does not intersect the x-axis)
y = 2x + 1 → Intersects the x-axis
x = −1 → Parallel to the y-axis (intersects the x-axis)