In the pair of equations bx-6y=18 and 2x - 3y=9, b is a constant. The system of two equations has an infinitely many solutions. What is the value of b?
A) 3
B) 4
C) 5
D) 6

Question

In the pair of equations bx-6y=18 and 2x - 3y=9, b is a constant. The system of two equations has an infinitely many solutions. What is the value of b? 
A) 3
B) 4
C) 5
D) 6

anonymous · Answer

For these to have infinite solutions, both equations have to be essentially the same.
That is you should be able to get one equation by simply multiplying both sides of the other equation by something.
What would you multiply 2x - 3y = 9 by on both sides to turn it into
                                   __x - 6y = 18

anonymous · Answer

I dont know cause you can't combine like terms

anonymous · Answer

nvm

anonymous · Answer

multiply by 2?