PLEASE HELP!!!!!
will mark brainliest!!!!!

Answer: (I trust you can graph the points)
{(6,9), (7, 7), (8, 5), (9, 3), (10, 1)}
Step-by-step explanation:
-2x+21
x=6 -12+21 = 9
x=7 -14+21 =7
x=8 -16+21 = 5
x=9 -18+21=3
x=10 -20+21=1