Question

For which intervals is the function negative

Answer 1

ANSWER

$(1,4)$

$(- \infty ,-3)$

EXPLANATION

The x-values for which the graph is below the x-values below the x-axis is the interval on which the graph is negative.

We can see from the graph that, for

$x < - 3$

the function is negative.

This can be rewritten as:

$(- \infty ,-3)$

Also for

$1 < x < 4$

the function is again negative.

This is also written as:

$(1,4)$