Question

Question #ec749

Answer 1

The equation `x=-4` is for a vertical line which passes through the `x`-axis at the point `-4`

Explanation:

Any vertical line can be defined by its `x` intercept.

A vertical line will have the `x`-values of all the points as the same value, so it can be written as `x` = "a number" (the `x`-intercept.)

So the equation `x=-4` is for a vertical line which passes through the `x`-axis at the point `-4`

Vertical lines never cross the `y-`axis (except the `y`-axis itself.)

Answer 2

See the explanation

Explanation:

`y` may take ALL values on its axis but `x` can only take on the value of -4. Hence the line parallel to the y-axis which passes through `-4` on the x-axis

Tony B