### Home > APCALC > Chapter 7 > Lesson 7.4.3 > Problem 7-209

7-209.

**Multiple Choice: **A point is moving along a curve . At the instant when the slope of the curve is

*-coordinate of the moving point is increasing at a rate of*

*‑coordinate of the point is:*

Solve for rise.

Implicitly differentiate with respect to .