### Video Transcript

Which axis is the straight line π¦
equals three parallel to?

First, we know that parallel lines
do not intersect and they have the same slope. We have the equation π¦ equals
three. If we think about the general form
for a straight line π¦ equals ππ₯ plus π and we have π¦ equals three, which means
that we have a slope of zero. From there, if we sketch a π¦- and
π₯-axis, graphing the line π¦ equals three would look like this. We should notice here that the line
π¦ equals three crosses the π¦-axis. And we know thatβs true because it
has a π-value of three. And in the general form, the π
represents the π¦-intercept.

We can, therefore, say that the
straight line π¦ equals three is not parallel to the π¦-axis because it intersects
the π¦-axis. But we can say that π¦ equals three
is parallel to the π₯-axis. The π₯-axis is the line where π¦
equals zero. The straight line π¦ equals three
is parallel to the π₯-axis.