Answer:
y=k, (k a constant).
Explanation:
The line x=-6 is a vertical line that crosses the x-axis at -6.
A perpendicular line will therefore be a horizontal line (running from left to right).
An example of a line perpendicular to x=-6 is shown in the diagram below.
In general, any line of the form y=k (where k is a constant) is perpendicular to x=-6.
