Mathematics 9 Second Grading Exam

Which of the following real-life situations illustrates quadratic function?

• A. a girl walking on a straight road

• B. free throw of a basketball player

• C. car accident in a street

• D. falling in line in the school canteen

If the photo shows linear function, which of the following pictures represents a quadratic function?

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Which of the following situations can be solved using quadratic functions?

• A. the center of a circular pool

• B. the distance between two towns

• C. the maximum height reached by an object thrown up to the air

• D. the needed materials to fence a garden

Which of the following equations represents a quadratic function?

Which of the following equations does not illustrate a quadratic function?

• 𝑦=𝑥 (𝑥+4)−3

• 𝑦=𝑥 (4𝑥+5)

• 𝑦=(𝑥−2)(𝑥+5)

• 𝑦=𝑥 (𝑥+4)(𝑥−3)

Which of the following graphs represents a second-degree function?

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