SOLUTION: What is the slope of any line perpendicular to the line formed by the equation -7x + 63y = 9?

Algebra ->  Linear-equations -> SOLUTION: What is the slope of any line perpendicular to the line formed by the equation -7x + 63y = 9?      Log On


   

Question 393682: What is the slope of any line perpendicular to the line formed by the equation -7x + 63y = 9?
Answer by ewatrrr(24785) About Me  (Show Source):
You can put this solution on YOUR website!


Hi

Using the standard slope-intercept form for an equation of a line y = mx + b

  where m is the slope and b the y-intercept.  

7x + 63y = 9     |solving for y to put into the slope-intercept form to find m

 y = -(1/9)x + 1/7   | m = -(1/9)

Lines perpendicular will have a slope m = 9  (the negative reciprocal of -(1/9))