Determine which system below will produce infinitely many solutions.
My answer is the last one can someone check these?
-4x + 6y = 20
4x - 3y = -2

-2x + 4y = 18
4x - 8y = -36

3x - 2y = 5
-6x - 4y = -10

5x - 3y = 12
15x - 9y = 24

The art museum had a total of 224 visitors on Tuesday. Visitors older than 18 paid $12 for admission. Visitors 18 years or younger paid $8 for admission. The museum collected a total of $2,520. How many visitors were 18 or younger?

42

56

182

194

my answer is 194

Question

Determine which system below will produce infinitely many solutions.
My answer is the last one can someone check these?
 -4x + 6y = 20
4x - 3y = -2

 -2x + 4y = 18
4x - 8y = -36

 3x - 2y = 5
-6x - 4y = -10

 5x - 3y = 12
15x - 9y = 24

The art museum had a total of 224 visitors on Tuesday. Visitors older than 18 paid $12 for admission. Visitors 18 years or younger paid $8 for admission. The museum collected a total of $2,520. How many visitors were 18 or younger?

 42

 56

 182

 194

my answer is 194

anonymous · Answer

Sorry the answer for 1st one is
-2x + 4y = 18
4x - 8y = -36

meilendurcer · Answer

ahh ok i was going back and forth on those answers

anonymous · Answer

That's incorrect Salmon
She had it right.

anonymous · Answer

2nd one equations are
x+y=224
12x+8y=2520

anonymous · Answer

Oops nevermind yes the 2nd one has infinite solutions
The last has no solutions.

meilendurcer · Answer

do i put 12 and 8 into the equations?

anonymous · Answer

no...Rearrange equation one as
x=224-y
now substitute it in equation two....

meilendurcer · Answer

can you help i don't understand about substituting and all

anonymous · Answer

after substituting equation two becomes
2688-12y+8y=2520
4y=168
y=42
Got it???

meilendurcer · Answer

yes i think i do.

meilendurcer · Answer

thanks