SOLUTION: Choose the equation of the line passing through the point (4,5) and perpendicular to y=1/4x+9

Algebra ->  Equations -> SOLUTION: Choose the equation of the line passing through the point (4,5) and perpendicular to y=1/4x+9      Log On


   

Question 750882: Choose the equation of the line passing through the point (4,5) and perpendicular to y=1/4x+9
Answer by jim_thompson5910(35256) About Me  (Show Source):
You can put this solution on YOUR website!
Perpendicular Slope: -4 (flip the fraction and sign of 1/4)

y+=+mx%2Bb

5+=+%28-4%29%284%29%2Bb

5+=+-16%2Bb

5%2B16+=+b

21+=+b

b+=+21

So the equation of the perpendicular line is y+=+-4x%2B21