procedures and Problem Solving Identifying the Equation of an Ellipse In Exercises 9-12, match the equation with its graph. [The graphs are labeled (a), (b), (c), and (d).] 3 () 4 -4 8 51 0-6 6 -5 -4 (C) 4 (d) 3 -10 5 -6 6 -4 -7 ngille an end demos 9. 4 = 1505 10. = 1 9 9 4 in sill to dignsled 11. (x - 2) 2 juode et didto + (y + 1)2 = 1 16 me noillin 9 Jode al Jinu 12. ( x + 2) 2 + ( y + 2 ) 2 = 1 9 4Using the Standard Equation of an Ellipse In Exercises 13-18, find the center, vertices, foci, and eccentricity of the ellipse, and sketch its graph. Use a graphing utility to verify your graph. 14. 16 = 1 81 (x + 3)2 (y - 2) 2 16. = 1 12 16