For the circle x² + y² = 25, a. find y when x = 3. Enter your answer as a list of numbers separated by commas. y = b. find the slope of the tangent line where x = 3. Enter your answer as a list of numbers separated by commas. The slope of the tangent line at x = 3 is c. find the points at which dy dx = 0 at dy dx = 0. Enter your answer as a list of coordinates. d. If the radius starts increasing at a constant rate of 3 cm/s, how fast is the area increasing when r = 9 cm? The area is increasing at cm²/s.

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