# SOLUTION: If line P contains points A (–1, 4) and B (3, –5), line q is parallel to line P and line r is perpendicular to line Q, what is the slope of line R?

Algebra ->  Algebra  -> Points-lines-and-rays -> SOLUTION: If line P contains points A (–1, 4) and B (3, –5), line q is parallel to line P and line r is perpendicular to line Q, what is the slope of line R?      Log On

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 Geometry: Points, lines, angles, perimeter Solvers Lessons Answers archive Quiz In Depth

 Click here to see ALL problems on Points-lines-and-rays Question 459573: If line P contains points A (–1, 4) and B (3, –5), line q is parallel to line P and line r is perpendicular to line Q, what is the slope of line R?Answer by Alan3354(30993)   (Show Source): You can put this solution on YOUR website!The slope of line P = -9/4 Line r is perpendicular so its slope = 4/9