SOLUTION: without graphing, determine whether the following pairs of lines are (a) parallel, (b) perpendicular, or (c) neither parallel or perpendicular: Express your answer in standard form

Algebra ->  Linear-equations -> SOLUTION: without graphing, determine whether the following pairs of lines are (a) parallel, (b) perpendicular, or (c) neither parallel or perpendicular: Express your answer in standard form      Log On


   

Question 486994: without graphing, determine whether the following pairs of lines are (a) parallel, (b) perpendicular, or (c) neither parallel or perpendicular: Express your answer in standard form.
5x - 6y = 19
6x + 5y = -30
Answer by jim_thompson5910(35256) About Me  (Show Source):
You can put this solution on YOUR website!
For any system of the form

system%28Ax%2BBy=C%2CBx-Ay=D%29

the two lines are perpendicular. In this case, the system you have fits this form (with a bit of simplification). So the two lines are perpendicular.