2points'19. 2y = 3 - 2x6x + 6y = 10for exercises 21–32, solve ea21. x+y=0x - 2y + 9 = 022. x=2-3x – 2y=123. x'- 3y = 74x + 3y = 13)

What is the missing step in this proof ?

What can you determine about the solutions of this system

1jessica's home town is a mid-sized city experiencing a decline in population. the following graph models the estimated population if the decline continues at the same rate. select the most appropriate unit for the measure of time that the graph represents. a. years b. hours c. days d. weeks