Chapter 13 - A Preview of Calculus: The Limit, Derivative, and Integral of a Function - Section 13.4 The Tangent Problem; The Derivative - 13.4 Assess Your Understanding - Page 917: 10

slope $m=-2$ See graph.

1. Find the derivative of $f(x)$ as $f'(x)=-2$ which is a constant. 2. The slope of the tangent line is the same as the derivative, we have $m=-2$ 3. The tangent line is $y-3=-2(x+1)$ or $y=-2x+1$ which is the same as $f(x)$. 4. See graph.