Task: Question Answering
Input (English): If a linear function passes through the points \((1, a)\), \((2, b)\), and \((4,18)\), what is the value of \(\frac{3}{2}b - a\)?
(A)4 (B)7 (C)9 (D)18 (E)It cannot be determined from the information given.
Output (English): C