Answer:
The slope of a line parallel to y=5x-9 is 5.
The slope of a line perpendicular to y=5x-9 is -1/5.
Step-by-step explanation:
The slope of a line that is parallel will have the same slope.
The slope of a line that is perpendicular will have the opposite reciprocal slope.
The given equation is in slope-intercept form which is y=mx+b where m is slope and b is y-intercept.
So we have y=5x-9 which implies this line has a slope of 5.
The slope of a line parallel to y=5x-9 is 5.
The slope of a line perpendicular to y=5x-9 is -1/5.