Question

Write an equation for the line that is perpendicular to

the y-axis at the point (0,2). What is the slope of the
line?

Answer 1

• Equation: y = 2
• Slope = zero

Explanation:

Perpendicular lines are lines that meet (or intersect) each other at right angles (90°).

A horizontal line is perpendicular to the y-axis.

The equation for a horizontal line is y = a.

If the line passes through point (0, 2), then the equation of the line is:

• y = 2

As the equation of the line has no x-variable, its slope is zero.