f you were solving a system of equations and you came to a statement like 4 = 4, what do you know about the system?
Part 2:
Solve the following system and show all of your work.
3y − 2x = 11
y + 2x = 9

Question

f you were solving a system of equations and you came to a statement like 4 = 4, what do you know about the system?
Part 2:
Solve the following system and show all of your work.
3y − 2x = 11
  y + 2x = 9

anonymous · Answer

1) they were the same line.

anonymous · Answer

1) There are an infinite number of solutions.

anonymous · Answer

2) 
$$3y-2x=11$$
$$y+2x=9$$ add in columns get 
$$4y=20$$ divide get 
$$y=5$$ substitute 5 for y in equation 2 get 
$$5+2x=9$$
$$2x=4$$
$$x=2$$

anonymous · Answer

do you know the 3 cases for solving systems? infinite, no solution, and one solution? that will be on the exam

anonymous · Answer

no i dont

anonymous · Answer

well you see where the lines are the same and they overlap that is something like 9=9 or -10=-10 thats infinite

anonymous · Answer

if you get 0=7 or 3=-25 then no solution