Decreasing.
1) In this question, let's find the slope of the line. With this information we can tell whether the line is decreasing, increasing, or even horizontal.
2) So let's plug those points into the slope formula:
[tex]\begin{gathered} m=\frac{y_2-y_1}{x_2-x_1} \\ m=\frac{2.3-5.8}{-3.9-(-4.3)}=\frac{2.3-5.8}{-3.9+4.3}=\frac{-3.5}{0.4}=-8.75 \end{gathered}[/tex]Notice that the slope is negative. Negative slopes tell us that the line is in a decreasing direction.