Mathematics for IGCSE & O level - Sketching Curves (Section 4 - No. 36)
In a quadratic graph, what is the relationship between the x-coordinate of the vertex and the line of symmetry?
The x-coordinate is the y-intercept
The line of symmetry is the vertical line at x = x-coordinate
The x-coordinate is the x-intercept
The line of symmetry is the horizontal line at y = x-coordinate
توضیح
The x-coordinate of the vertex defines the line of symmetry (a vertical line).