Question

Determine the interval(s) on which the function is (strictly) decreasing.

Answer 1

Decreasing function: a function whose value decreases as the independent variable increases over given range.( then graph move downwards direction then graph is decreasing.

So the graph move downward direction in interval:

$(-4,-2)\text{ and }(3,7)$

so strictly decreasing in range :

$(3,7)$