SOLUTION: I need to determine whether 3x-8y=-14 and 32x+12y=-2 are perpendicular, parallell or neither. Can you also show mw how to figure both of them out. I attempted the first one and cam

Algebra ->  Equations -> SOLUTION: I need to determine whether 3x-8y=-14 and 32x+12y=-2 are perpendicular, parallell or neither. Can you also show mw how to figure both of them out. I attempted the first one and cam      Log On


   

Question 201652: I need to determine whether 3x-8y=-14 and 32x+12y=-2 are perpendicular, parallell or neither. Can you also show mw how to figure both of them out. I attempted the first one and came up with perpendicular but im not sure. Thanks
Answer by solver91311(24713) About Me  (Show Source):
You can put this solution on YOUR website!


Rearrange both of your equations until they are in slope-intercept form, namely:



Then compare the coefficients on (the in ).

If they are equal, the two lines are parallel.

If they are negative reciprocals, that is if , then the two lines are perpendicular.

Otherwise, they are neither.

These are the rules:





John