Quadratics STAAR Questions

What is the domain of the function for this situation?

• 0 ≤ x ≤ 230

• 6 ≤ y ≤ 36

• 0 ≤ y ≤ 36

• 6 ≤ x ≤ 230

Which function is equivalent to g (x) = x² + 15x − 54

• g(x) = (x + 9)(x − 6)

• g(x ) = (x + 18)(x − 3)

• g(x) = (x − 9)(x + 6)

• g(x) = (x − 18)(x + 3)

Which graph best represents y = −x² + 6x − 1? Reminder: Use desmos

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Which expression is equivalent to 24x² − 22x + 5?

• (12x + 5)(2x + 1)

• (8x − 5)(3x − 1)

• (12x − 5)(2x − 1)

• (8x + 5)(3x + 1)

Which coordinates best represent the vertex of the graph?

• (2.4, 0)

• (0, -1)

• (-0.4, 0)

• (1, -2)

which of these best represents the domain of f?

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• All real numbers

• y > 5.5

• All real numbers less than -3 or greater than 2

Which statement about k(x) = -x²-2x+15 is true?

• The zeros are -3 and 5, because k(x) = -(x+3)(x-5).

• The zeros are -5 and 3, because k(x) = -(x+5)(x-3).

• The zeros are -5 and -3, because k(x) = -(x+5)(x+3).

• The zeros are 3 and 5, because k(x) = -(x-3)(x-5).

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• A/F

• B/G

• C/H

• D/J

• 8

• 9

• -4

• 8