Question 377237
Find the slope of the line that is a)parallel and b)perpendicular to the given line:

y=3
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In slope-intercept form:
y = 0x + 3
Slope m = 0
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All lines parallel have the same slope, = 0
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All lines perpendicular have a slope that's the negative inverse,
m = -1/0
= undefined.  They're parallel to the y-axis.