Find all -intercepts of the graph of . Write your answer as a list of ordered pairs, separated by commas. If there are no -intercepts, write "none".

When we plot the graph of x^2 - 2x + y^2 + 6y - 15 = 0, we get a circle centered at (1,-3) with radius 2*sqrt(7). Then by the Pythagorean Theorem, the x-intercepts are (-4,0) and (6,0).

it says its wrong