ANSWER
-6
EXPLANATION
The slope of a line passing through points (x₁, y₁) and (x₂, y₂) is,
[tex]m=\frac{y_1-y_2}{x_1-x_2}[/tex]
In this case, y represents the output while x represents the input. Each row in the table is a pair (x, y).
If we take the first two points, (1, 17) and (2, 11), we can find the slope,
[tex]m=\frac{17-11}{1-2}=\frac{6}{-1}=-6[/tex]
Hence, the slope of this line is -6.
