Parabolic tangent to straight line: it means that parabola and straight line have an intersection point, and this intersection point has only one intersection point. It means that a parabola intersects a straight line and there is only one intersection point.

Or simply put, a parabola and a straight line have an intersection.

When it comes to doing problems, it should be noted that parabola and this straight line have only one thing in common. The horizontal and vertical coordinates of this common point are parabola and straight line.

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