What is the slope of a line that is perpendicular to the graph of y - 3 = 7 - [tex]\frac{9}{2} x[/tex]?

A. [tex]-\frac{9}{2}[/tex]

B. [tex]-\frac{2}{9}[/tex]

C. [tex]\frac{2}{9}[/tex]

D. [tex]\frac{9}{2}[/tex]