Are the lines with equations 2x = 8 and -3y = 15 parallel, perpendicular or neither

Given the equation of the
lines:

-3y = 15

2x =
8

Let us rewrite the
equations:

==> y=
-5

==> x = 4

The line
y= -5 is a line parallel to the x-axis and passes through y=
-5.

The line x= 4 is a line parallel to the y-axis and
passes through x=4.

But we know that the x-axis and the
y-axis are perpendicular.

Then the lines
-3y=15 and the line 2x=8 are perpendicular.