The slope of a curve at any point is given by this formula:
A. The change in y coordinates between two points divided by the change in their x coordinates.
B. The percentage change in x coordinates between two points divided by the percentage change in their y coordinates.
C. The percentage change in y coordinates between two points divided by the percentage change in their x coordinates.
D. The change in x coordinates between two points divided by the change in their y coordinates.
Answer: A
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