Final answer:
The "find dx/dy at the given point" calculator determines the slope of the tangent line at a specified point.
Step-by-step explanation:
The "find dx/dy at the given point" calculator determines the slope of the tangent line at a specified point. This is the correct answer, option A.
When finding the derivative of a function with respect to a variable, such as x, with respect to another variable, such as y, we are calculating the rate of change of that function. In this case, we are specifically finding the rate of change, or slope, of the function at a particular point on the curve.
By finding the derivative at a given point, we can determine the instantaneous rate of change at that point.