# How do you graph #x^2 + y^2 = 16# and #r = 4#?

##### 1 Answer

Apr 11, 2018

They're the same curve. Recall that

#sqrt(x^2 + y^2) = 4#

#x^2 +y^2 =4#

Which is same as the other equation. This makes a circle with radius

graph{x^2 + y^2 = 4 [-10, 10, -5, 5]}

Hopefully this helps!