We can graph circles and lines on the same coordinate grid and estimate where they intersect. The image shows the circle and the line . The two figures appear to intersect at the points and . To verify whether these truly are intersection points, we can check if substituting them into each equation produces true statements.

Let’s test . First, substitute it into the equation for the line. When we do so, we get . This is a true statement, so this point is on the line.