Graph a circle that has its center at 0,0 and passes through 3,3
3 answers
awencer is 20
Cannot graph on these posts, so I don't know how Helper Girl got the "awencer" of 20.
equation:
x^2 + y^2 = r^2
(3,3) on it, so
9 + 9 = r^2
equation: x^2 + y^2 = 18
graph: (copy and paste into URL)
www.wolframalpha.com/input/?i=plot+x%5E2+%2B+y%5E2+%3D+18
x^2 + y^2 = r^2
(3,3) on it, so
9 + 9 = r^2
equation: x^2 + y^2 = 18
graph: (copy and paste into URL)
www.wolframalpha.com/input/?i=plot+x%5E2+%2B+y%5E2+%3D+18