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OpenStudy (anonymous):
Find the slope of a line that is a) parallel and b) perpendicular to the given line: -4x-9y=-4
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OpenStudy (anonymous):
a) 4/9 b)-9/4
OpenStudy (anonymous):
y=4/9-4x/9
OpenStudy (anonymous):
How did you figure it out?
OpenStudy (anonymous):
you plug in the values.
OpenStudy (saifoo.khan):
Solve for y: Then compare it with y=mx + b where "m" is the slope.
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OpenStudy (anonymous):
4x+ 9y=4 -> 9y = -4x + 4 -> y = -4x/9 + 4/9 slope m = -4/9 Slope of parallel line = - 4/9 Slope of perpendicular line = +9/4
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