2. The graph of a function is shown on the coordinate plane

What are the domain and range for the function?

(1 point)
Responses

Domain: −8≤y≤−2
Range: −2≤x≤2
Domain: −8≤y≤−2
Range: −2≤x≤2

Domain: −8≤x≤−2
Range: −2≤y≤2
Domain: −8≤x≤−2
Range: −2≤y≤2

Domain: All Real Numbers, Range: All Real Numbers
Domain: All Real Numbers, Range: All Real Numbers

Domain: x≥−8
Range: y≤−2

1 answer

To determine the domain and range of a function from a graph, we look at the values of \(x\) (horizontal values) and \(y\) (vertical values).

  1. Domain refers to all the possible values of \(x\) for which the function is defined.
  2. Range refers to all the possible values of \(y\) that the function can take.

Based on the options given, here are the interpretations for each:

  • Domain: −8≤y≤−2; Range: −2≤x≤2

    • This option is incorrect because the domain deals with \(x\) values and range deals with \(y\) values.
  • Domain: −8≤x≤−2; Range: −2≤y≤2

    • This option appears correct if the graph defined within \(x\) values from \(-8\) to \(-2\) and \(y\) values from \(-2\) to \(2\).
  • Domain: All Real Numbers, Range: All Real Numbers

    • This option is incorrect unless the graph extends indefinitely in both directions on the coordinate plane, which is usually rare.
  • Domain: x≥-8; Range: y≤-2

    • This option indicates that the \(x\) values start at \(-8\) and go infinitely to the right (greater than or equal to \(-8\)) and the \(y\) values are all values less than or equal to \(-2\). This might be correct if the graph has that kind of behavior.

Without a specific graph reference, I recommend selecting the option that matches the behavior of the graph you're analyzing. If the graph is confined between the \(x\) values of \(-8\) and \(-2\) with corresponding \(y\) values from \(-2\) to \(2\), then the second option is the correct choice. If the graph suggests otherwise, you'd need to select according to the presented characteristics of the function.