We solve the 2 equations simultaneously by substituting the expression
`y = x -1`
into the expression
[See some background to this at: Algebraic Solution of Systems of Equations.]
So we see that the solutions for x are `x = 1` or `x = 2`. This gives the corresponding y-values of `y = 0` and `y = 1`.
So the points of intersection are at: `(1, 0)` and `(2, 1)`.
We can see that our answer is correct in a sketch of the situation:
Where did (0.5, 1.5) for the center of the circle come from?
Easy to understand math videos: