Question 902611
I guess the best way to look at it is compared to the horizon is it sloping upwards (increasing) or sloping downwards (decreasing).
So looking at the graph, from {{{x=-2}}} to {{{x=-1}}}, it's sloping downwards or decreasing.
From {{{x=-1}}} to {{{x=1}}}, it's sloping upwards or increasing.
And finally, from {{{x=1}}} to {{{x=2}}}, it sloping downwards or decreasing.