Question

give the center and radius of each circle... and i need help on how to graph one X.x
x^2 + y^2 =49

Answer 1

center is (0,0) and radius is 7

Answer 2

can you teach me how you got that though???

Answer 3

standard equation of a circle is (x-a)^2+(y-b)^2=r^2

(a,b) is the center of the circle which is 0 for your case and r is found by sqrting 49

Answer 4

thank you very much :)