Hi

 



Are these lines parallel, perpendicular, or neither:

y = (-1/3)x – 5                |m = (-1/3)

-18x + 6y = 21 OR y= 3x+21/6   |m = 3

Lines are ⊥, having slopes that are negative reciprocals of one another

 

Answer by MathLover1(20850)   (Show Source): You can put this solution on YOUR website!
 ...this is the slope-intercept form and we can say that slope 





...write this equation in the slope-intercept form too











.........we can say that slope 



so the slopes of our lines are  lines are  they have the  slope; evidently, these two lines are  .



If they are , their slopes  to get ; 



so 



let's check it:



.........they are 



let's see their graph:























 

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