A
5x + 3y = 2; 10x+6y= -4
Which of the following pairs of equations has infinitely many
solutions?
B
5x + 3y = -2; 10x + y = 4
C
5x - 3y = -2; -10% +6y= 4
D
5x - 3y= 2; 10x + 6y= 4
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Question A is to solve a system equation:
5x + 3y = 2 ; 5x + 3y = -2
No numbers satisfy those equations at the same time.
Question B is to find a system equation.
Tip: If you multiply a number and get the same equation, there are infinitely many solutions. (Basically, there is one equation.)
You can multiply by 2 on 5x - 3y = 2. Then you will get 10x + 6y = 4, which is the same equation.
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