STAAR Key Features of Quadratic Questions

TEK A.6(A) Which graph best represents a quadratic function with a range of all real numbers greater than or equal to 3?

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Which graph best represents part of a quadratic function with a domain of all real numbers less than -4?

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What is the range for the situation?

• All real numbers less than or equal to 7.66

• All real numbers less than or equal to 1.25

• All real numbers greater than or equal to 0 and less than or equal to 7.66

• All real numbers greater than or equal to 0 and less than or equal to 1.25

Which answer choice best represents the domain and range of the function?

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What is the domain of the function for this situation?

• 0 ≤ x ≤ 230

• 6 ≤ y ≤ 36

• 0 ≤ y ≤ 36

• 6 ≤ x ≤ 230

What are the domain and range of g(x) = -1/4(x - 17)² + 61?

• Domain: All real numbers, Range: g(x) ≤ 61

• Domain: x ≤ 17, Range: g(x) ≤ 61

• Domain: All real numbers, Range: x ≤ 17

• Domain: g(x) > 61, Range: x ≤ 17

TEK A.6(B) Which function is equivalent to y = 3(x + 2)² + 7?

• y = 3x² + 12x + 33

• y = 3x² + 12x + 19

• y = 3x² + 19

• y = 3x² + 33

TEK A.6(C) The solutions to p(x) = 0 are x = -7 and x = 7. Which quadratic function could represent p?

• p(x) = x² - 49

• p(x) = x² + 49

• p(x) = x² - 14

• p(x) = x² + 14

Which function is best represented by this graph?

• f(x) = -1/2 x² + 16

• f(x) = -x² + 16

• f(x) = -1/2 x² + 8

• f(x) = -x² + 8

The graph of a quadratic function is shown on the grid.

• h(x) = x² - 3x - 9

• h(x) = x² + 3x - 9

• h(x) = x² - 6x

• h(x) = x² + 6x