Mathematics for IGCSE & O level - Sketching Curves (Section 4 - No. 5)
How are the roots of a quadratic equation related to the graph of the equation?
The roots are the y-intercepts of the graph.
The roots are the x-intercepts of the graph.
The roots are the turning points of the graph.
The roots do not correspond to points on the graph.
Explicació
The roots are where the graph intersects the x-axis.