What do you notice about the graph when it passage through a root of even multiplicity?

When a graph passes through a root of even multiplicity, it touches the x-axis at that root but does not cross it. This results in a behavior where the graph flattens out at the root, typically resembling a parabolic shape. The function's value is zero at the root, and the graph approaches the x-axis from the same side before and after the root. Overall, the even multiplicity creates a smooth, turning point at the x-axis.