Question 7 • Algebra 1
Completing the square gives f(x) = (x − 4)² − 11, so choice C is true. The quadratic has two x-intercepts because its discriminant is (−8)² − 4(1)(5) = 44, which is positive, making B true. Setting x = 0 gives f(0) = 5, so the y-intercept is (0, 5), as in choice D. The vertex is (4, −11), and the axis of symmetry is x = 4, so A and E are false.
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