Question

Given the function p(t) in the graph below, identify the intervals over which the function appears to be decreasing

Answer 1

We want to get the intervals for which the function graphed is decreasing

The intervals are the x-values

Looking at the graph (notice the arrow heads, it means the graph is continuous), the function is decreasing (sloping downwards) between x-values of negative infinity to 1, And later again between x-values of 3 to 4.

So the intervals where the function is decreasing written as interval notation is

`(-\infty,1)\cup(3,4)`