Q: Is x2 plus y2 equals 4 a function?

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Yes

x2 + y2 = 2r2

Type your answer here. Find the radius for a circle with the equation x2 plus y2 equals 9? ..

7

(2-r)e-rr

Related questions

Yes

x2 + y2 = 2r2

Type your answer here. Find the radius for a circle with the equation x2 plus y2 equals 9? ..

X2 + y2 = 100 = r2 r = 10

7

X2 or 2 times x?

(2-r)e-rr

No.

If this is the equation of a circle, the answer is 11, except that there needs to be a plus sigb between the x2 and the y2

4

3

5. A circle with centre (0,0) has equation: x2 + y2 = radius2 With: x2 + y2 = 25 = 52 The radius is 5.