Expert answer:Need help with an algebra test about an x-axis
Answer & Explanation:1.Find the x-intercepts. State whether the graph crosses the x-axis, or touches the x-axis and turns around, at each intercept.f(x) = x3 + 2×2 – x – 2 A. x = 2, x = 2, x = -1; f(x) touches the x-axis at each. B. x = -2, x = 2, x = -5; f(x) crosses the x-axis at each. C. x = -3, x = -4, x = 1; f(x) touches the x-axis at each. D. x = -2, x = 1, x = -1; f(x) crosses the x-axis at each.2.Find the x-intercepts. State whether the graph crosses the x-axis, or touches the x-axis and turns around, at each intercept.f(x) = -2×4 + 4×3 A. x = 1, x = 0; f(x) touches the x-axis at 1 and 0 B. x = -1, x = 3; f(x) crosses the x-axis at -1 and 3 C. x = 0, x = 2; f(x) crosses the x-axis at 0 and 2 D. x = 4, x = -3; f(x) crosses the x-axis at 4 and -33.Find the coordinates of the vertex for the parabola defined by the given quadratic function. f(x) = 2(x – 3)2 + 1 A. (3, 1) B. (7, 2) C. (6, 5) D. (2, 1)4.Find the domain of the following rational function.f(x) = x + 7/x2 + 49 A. All real numbers < 69 B. All real numbers > 210 C. All real numbers ≤ 77 D. All real numbers
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