Problem
9. Given the points $(-1,-2)(-4,-3)$, write the following in point slope form. a. $y-4=\frac{1}{3}(x-3)$ b. $y+2=3(x+1)$ c. $y-2=\frac{1}{3}(x-1)$ d. $y+2=\frac{1}{3}(x+1)$
Solution
Step 1 ：Find the slope: \(m = \frac{-3 - (-2)}{-4 - (-1)} = \frac{1}{3}\)
Step 2 ：Use point-slope form: \(y - (-2) = \frac{1}{3}(x - (-1))\)
Step 3 ：\boxed{y + 2 = \frac{1}{3}(x + 1)}
