#### Answer

Positive, $m=9$

#### Work Step by Step

The slope is positive because the more hours she works, the more she gets paid.
To find the slope, we use the formula $m=\frac{y_2-y_1}{x_2-x_1}$.
We plug in the $x$ and $y$ values from the figures stated in the problem: $m=\frac{36-9}{4-1}$
We simplify above and below the fraction bar with subtraction: $m=\frac{27}{3}$
We divide the fraction: $m=9$