SOLUTION: Find an equation of the line that is tangent to the circle x2 + y2 = 25 at the point P(−3, −4).

Algebra ->  Coordinate-system -> SOLUTION: Find an equation of the line that is tangent to the circle x2 + y2 = 25 at the point P(−3, −4).      Log On


   

Question 916882: Find an equation of the line that is tangent to the circle x2 + y2 = 25 at the point
P(−3, −4).
Answer by Alan3354(69443) About Me  (Show Source):
You can put this solution on YOUR website!
Find an equation of the line that is tangent to the circle x2 + y2 = 25 at the point
----------
The slope of the tangent to a circle about the Origin at point (x,y) is -x/y
---
Use that and y = mx + b, or
y - y1 = m*(x - x1)
to get the equation.