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Lesson: Determining the Sign of a Function from a Graph

Worksheet: Determining the Sign of a Function from a Graph • 6 Questions

Q1:

Determine the sign of the function represented by the figure below in .

  • AThe function is negative when , and the function equals zero when .
  • BThe function is positive when , and the function equals zero when .
  • CThe function is positive when , the function is negative when , and the function equals zero when .
  • DThe function is negative for all .
  • EThe function is negative when , the function is positive when , and the function equals zero when .

Q2:

Determine the sign of the function represented by the figure below across its domain in .

  • AThe function is negative when and equals zero when .
  • BThe function is negative when , positive when , and zero when .
  • CThe function is positive when and equals zero when .
  • DThe function is positive when , negative when , and zero when .

Q3:

Determine the sign of the function represented by the figure below over the interval .

  • AThe function is positive for all , and the function equals zero when .
  • BThe function is negative when , the function is positive when , and the function equals zero when .
  • CThe function is negative for all , and the function equals zero when .
  • DThe function is positive when , the function is negative when , and the function equals zero when .

Q4:

Which of the following correctly describes the interval over which the illustrated function is negative?

  • A
  • B
  • C
  • D
  • E

Q5:

Determine the sign of the function represented in the figure below in .

  • AThe function is positive when , negative when , and zero when .
  • BThe function is positive when , negative when , and zero when .
  • CThe function is positive when , negative when , and zero when .
  • DThe function is positive when , negative when , and zero when .
  • EThe function is positive when , negative when , and zero when .
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