**How to graph a circle on Desmos - Quora**
https://www.quora.com/How-do-I-graph-a-circle-on-Desmos

If you know what that is, then on Desmos, you can graph r=k, where k is any real number you want. Circle equations usually come in the form ax^2+ by^2 = r^2, where a, b, and r^2 are constants, and a=b. If you type your equation in the above form on a …

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