1. **Problem:** Find the equation of the line passing through points (-1,7) and (2,-6).
2. **Formula:** The slope $m$ of a line through points $(x_1,y_1)$ and $(x_2,y_2)$ is given by:
$$m=\frac{y_2-y_1}{x_2-x_1}$$
The equation of the line in point-slope form is:
$$y - y_1 = m(x - x_1)$$
3. **Calculate slope:**
$$m=\frac{-6 - 7}{2 - (-1)}=\frac{-13}{3}$$
4. **Write equation using point (-1,7):**
$$y - 7 = -\frac{13}{3}(x + 1)$$
5. **Simplify:**
$$y - 7 = -\frac{13}{3}x - \frac{13}{3}$$
$$y = -\frac{13}{3}x - \frac{13}{3} + 7$$
$$y = -\frac{13}{3}x - \frac{13}{3} + \frac{21}{3}$$
$$y = -\frac{13}{3}x + \frac{8}{3}$$
**Final equation:** $$y = -\frac{13}{3}x + \frac{8}{3}$$
This line has a descending slope as expected.
Line Equation A
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