Please help me identify the range!

And please provide steps on how to get the right answer.

9514 1404 393

  C.  -1 ≤ y ≤ 1

Step-by-step explanation:

The range is the vertical extent of the graph.

Here, the graph goes back and forth between y = -1 and y = +1, so the range is the interval -1 to +1, with those values included. Written as an inequality, it is ...

  -1 ≤ y ≤ 1

Written in interval notation, it is ...

  [-1, 1] . . . . using square brackets to indicate the end values are included

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Curly brackets { } are used to delimit a set. That is {-1, 1} means the y-values consist only of -1 or 1 and nothing else. Obviously, that is not the case here.

So, the steps are ...

  1) understand the vocabulary, so you know what the question is asking

  2) be able to read a graph and identify high points and low points

  3) recognize the various ways the answer can be written

  4) locate one of those answer possibilities in the list of choices offered

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step-by-step explanation: