which is the graph of the step function f(x)?

f(x) = {-1x< -1} 0-1< x< 1 1x> 1



image for option 1

The graph of the step function f(x) is represented by the 2nd graph.

Step-by-step explanation:

We are given the step function,

.

So, from the options, we see that,

In 1st graph, the conditions and is not satisfied.

In 3rd graph, the points -1,0,1 are included, which is not correct.

In 4th graph, and is not satisfied.

Thus, we have,

The graph of the step function f(x) is represented by the 2nd graph as shown below.

explanation:

step-by-step explanation: