Homework Help: Geometry cheak

Posted by Ariel on Friday, June 11, 2010 at 11:52pm.

Choose whether the lines given below are parallel, perpendicular or neither. 4x - 6y = 9; 3x - 2y = 11
-6y+4x=9 -2y+3x=11
-6y=(9/-6)-(4/-6x) -2y=(11/-2)-(3/-2)
y=2/3x+-3/2 y=-3/2x+-11/2

so they would be perpendicular.
Is this right??

Geometry cheak - Reiny, Friday, June 11, 2010 at 11:58pm
slope of 4x-6y=9 is 2/3
slope of 3x-2y = 11 is 3/2

so neither parallel nor perpendicular

for the equation
Ax + By + C = 0
the slope is - A/B
Geometry cheak - Ariel, Saturday, June 12, 2010 at 12:00am
Thank you:)
Geometry cheak - Ellie, Sunday, March 20, 2011 at 9:10pm
Decide whether the pair of lines is parallel, perpendicular or neither: 2x+3y=3 2x+3y=10

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