Answer: C-Zero
Step-by-step explanation:
From the given graph, it can be seen that the line representing a linear function y=-3 is parallel to x-axis.
The slope of x-axis is known to be 0.
[ ∵ slope=[tex]\dfrac{\text{change in y}}{\text{change in x}}[/tex] and at x axis the y value remains same (y=-3), so the change in y value is 0 i.e. slope is 0]
Also, the slope of two parallel lines are equal.
Therefore, the slope of the given liner function y=-3 is 0.
