Option d; as x increases, y increases, and as x decreases, y increases.
Explanation:
First, we need to analyze the plotting of the graph. When it is on the negative axis of x, as the values of x increase (x values increasing in the negative axis means it's decreasing in value), the y values also increase. So as x decreases, y increases.
On the positive axis of x, as the x values increase, the corresponding values of y also increase with x. So as x increases, y values also increase with it.
So in the graph, as x increases, y also increases whereas if x decreases, y increases. This is given by option d.
