Mathematics for IGCSE & O level - Graphs Of Functions (Section 5 - No. 37)
What is the general method to estimate the gradient of a curve at a point?
Drawing a tangent to the curve at that point.
Calculating the average rate of change over an interval.
Choosing points to calculate the gradient where the x increase is an easy number
Finding the y intercept
Explanation
The method to estimate the gradient is drawing a tangent and carefully selecting points.
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