### Home > APCALC > Chapter 8 > Lesson 8.1.3 > Problem8-33

8-33.

No calculator! Given $f ( x ) = \frac { 1 - x } { x - 3 }$, determine all intervals where $y = f (x)$ is concave up. Homework Help ✎

Solve $f ^{\prime\prime}(x) > 0$.