i think you do Vertical/horizontal
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divide by the gradient
Draw a tangent to the curve at the point where you need the gradient and find the gradient of the line by using gradient = up divided by across
Yes beccause: (y1-y2)/(x1-x2) = gradient
The gradient of a line is the same as the slope of a line. It will tell someone measuring the line how straight the line is.
Select two values of x: (x1 and x2) within the domain. Solve the equation of the line to find the corresponding values for y: (y1 and y2). Then the gradient = (y1 - y2) / (x1 - x2)