Final answer:
The slope of a line parallel to y=9x-6 is 9, and the slope of a line perpendicular to y=9x-6 is -1/9.
Step-by-step explanation:
The slope of a line parallel to y=9x-6 will be equal to the slope of the given line, which is 9. This is because parallel lines have the same slope.
The slope of a line perpendicular to y=9x-6 will be equal to the negative reciprocal of the slope of the given line. The slope of the given line is 9, so the slope of a line perpendicular to it will be -1/9.