Multiple choice technology testing

Find the invalid equivalence class for the following test case Draw a line up to the length of 4 inches

  1. Line with 1 dot-width

  2. Curve

  3. Line with 4 inches

  4. None of the above
Reveal answer Fill a bubble to check yourself
B Correct answer
Explanation

In equivalence class testing for a line drawing tool, valid inputs are straight lines of different lengths (including 1 dot-width to 4 inches). A curve is fundamentally invalid because it violates the basic geometric requirement of being a line.

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