Quadratic Function part 1 math 9

Quadratic function is any function of the form: , where a, b and c are real numbers and ____________________.

• A. a ǂ 0

• B. a < 0

• C. a = 0

• D. a ≥ 0

The graph of a quadratic function is a smooth curve called

• A. Line

• B. Circle

• C. V-Shape

• D. Parabola

Tags

CCSS.HSF-IF.C.7A

Which of the following is a quadratic function?

• A. y - 4x = 2x² + 5

• B. 2x² - 4x + 5 = 0

• C. 2x + y = 5

• D. y² = 4x + 5

Which of the following table of values represent a quadratic function?

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Which of the following graph describes a quadratic function 𝑦 = 𝑎𝑥² + 𝑏𝑥 + 𝑐 with 𝑎 > 0?

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Tags

CCSS.HSF-IF.C.7A

Using the function form 𝑓(𝑥) = 𝑎𝑥² + 𝑏𝑥 + 𝑐, which of the following are the values of a, b, and c of the function 𝑦 = 3 − 5𝑥² + 4𝑥?

• A. 𝑎 = 3 ,𝑏 = – 5 , 𝑐 = 4

• B. 𝑎 = – 5 , 𝑏 = 3 , 𝑐 = 4

• C. 𝑎 = – 5 , 𝑏 = 4 , 𝑐 = 3

• D. 𝑎 = 4, 𝑏 = 3 , 𝑐 = – 5

Express 𝑓(𝑥) = −3(𝑥 + 1)² + 4, in the form 𝑓(𝑥) = 𝑎𝑥² + 𝑏𝑥 + 𝑐 ?

• A. 𝑓(𝑥) = −3𝑥² − 3𝑥 − 1

• B. 𝑓(𝑥) = −3𝑥² − 6𝑥 − 1

• C. 𝑓(𝑥) = −3𝑥² − 3𝑥 + 1

• D.D. 𝑓(𝑥) = −3𝑥² − 6𝑥 + 1

If 𝑓(𝑥) = (𝑥 + 2)² − 5 is written in the form 𝑓(𝑥) = 𝑎𝑥² + 𝑏𝑥 + 𝑐 , find a + b – c ?

• A. 14

• B. 6

• C. 4

• D. 0

What must be the value of n so that the term 𝑥^1−𝑛 is of degree 2 ?

• A. -2

• B. -1

• C. 0

• D. 1

Which must be the value of (h, k) in the quadratic function 𝑦 = 2(𝑥 − 3) ²+ 4 ?

• A) (–3, –4)

• B) (–3, 4)

• C) (3, –4)

• D) (3, 4)