## Precalculus (6th Edition)

$$m=\dfrac{9}{4}$$
RECALL: The standard form of a line's equation is $Ax+by=C$. The slope $m$ of the line is given by the formula $m=-\dfrac{A}{B}, B\ne0$. The given equation is in standard form with $A=9$ and $B=-4$. Thus, the slope of the line is: $$m=-\dfrac{A}{B}=-\dfrac{9}{-4}=\dfrac{9}{4}$$