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A graph is shown. ( 1. 11) (3, 11) (0, 5) (25) ( 1.3) 6. Use the graph to identify the value of a for this function. 7. Write the equation of the function in vertex form. A table of values is shown. x V -2 -36 -1 -45 0 -48 -45 2 - 36 8. Use the table of values to identify the value of a for this function. 9 . Write the equation of the function in vertex form. 10. Michelle used completing the square to rewrite y = -2x2 + 8x + 1 in vertex form. Her work is listed below. What error did she make? How can she correct her error? y = -2x2 + 8x +1 y = -2(x2 - 4x + )+1 y = -2(x2 - 4x + 4) +1+4 y = -2(x2 - 4x+4) +5 y = -2(x- 2)2 + 5