9-24 - Graphing Quadratic Functions A quadratic function f is given. (a) Express f in standard form. (b) Find the vertex and x- and y-intercepts of f. (c) Sketch a graph of f. (d) Find the domain and range of f. 9. f(x) = x² – 2x + 3 10. f(x) = x² + 4x – 1 11. f(x) = x² - 6x 12. f(x) = x² + &x 13. f(x) = 3x + 6x 14. f(x) = -x² + 10x

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