name each polygon by its number of sides and then classify it as convex or concave and regular or irregular

Plot the points (0,6), (3,15.8), and (9.5,0) using the graphing tool, and find the function

Me n o w. i need t h i s. 10 points

How is the equation of this circle written in standard form? x2 + y2 - 6x + 14y = 142 a) (x - 3)2 + (y + 7)2 = 200 b) (x+ 3)2 + (y - 7)2 = 200 (x - 6)2 + (y + 14)2 = 142 d) (x+6)2 + (y- 14)2 = 142