SOLUTION: determine whether each pair of lines is parallel, perpendicular, or none. y=3x-8,x+3y=7

Algebra ->  Equations -> SOLUTION: determine whether each pair of lines is parallel, perpendicular, or none. y=3x-8,x+3y=7      Log On


   

Question 1128822: determine whether each pair of lines is parallel, perpendicular, or none.
y=3x-8,x+3y=7
Answer by Boreal(15235) About Me  (Show Source):
You can put this solution on YOUR website!
write in slope-intercept form.
y=3x-8 and y=(-1/3)x+(7/3)
These slopes are 3 and -1/3. They are negative reciprocals in that their product is -1
The lines are perpendicular.
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