Find Numbers a and B, or K, So That F $f ( x ) = \left\{ \begin{array} { l l } 1 , & x < 2 \\a x + b , & 2 \leq x \leq 3 \\- 1 , & x > 3\end{array} \right.$

Multiple Choice

Find numbers a and b, or k, so that f is continuous at every point.
- $f ( x ) = \left\{ \begin{array} { l l } 1 , & x < 2 \\a x + b , & 2 \leq x \leq 3 \\- 1 , & x > 3\end{array} \right.$

A) a = 1, b = -1
B) a = -2, b = -7
C) a = -2, b = 5
D) Impossible