SOLUTION: Hi Can I have some help with finding this function? Find a function whose graph is the bottom half of the circle x^2 + y^2 = 25. f(x) =

Algebra ->  Equations -> SOLUTION: Hi Can I have some help with finding this function? Find a function whose graph is the bottom half of the circle x^2 + y^2 = 25. f(x) =      Log On


   

Question 126341: Hi Can I have some help with finding this function?
Find a function whose graph is the bottom half of the circle x^2 + y^2 = 25.
f(x) =
Answer by solver91311(24713) About Me  (Show Source):
You can put this solution on YOUR website!
Solve for y:

x%5E2+%2B+y%5E2+=+25

y%5E2=25-x%5E2}

y+=sqrt%2825-x%5E2%29 OR y=-sqrt%2825-x%5E2%29. The first one is the top half of the circle (all positive y values), and the other one is the bottom half of the circle, (all the negative y values).

f%28x%29=-sqrt%2825-x%5E2%29

graph%28400%2C400%2C-10%2C10%2C-10%2C10%2C-sqrt%2825-x%5E2%29%29