Mathematics for IGCSE & O level - Sketching Curves (Section 4 - No. 20)
If the graph of \(y=ax^2+bx+c\) touches the x-axis at only one point, what is the x-coordinate called?
The y-intercept
The x-intercept, or root.
The vertex's x-coordinate.
The slope of the graph
Explanation
If the graph touches the x-axis, that point is the x-intercept or root.
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