For what ordered pair (a,b) are there infinite solutions (x,y) to the system
2ax + 2y = b
5x + y = -3 - x + 4y
See an example: https://web2.0calc.com/questions/hard-problem_24
Now solve it for yourself! :D
I am not going to answer your question because you will have to solve it yourself. Based on the way I solved a similar question, you should have a an idea. Could you please explain your work so far?
If you have no progress made, then consider what makes both equations have an infinite set of solutions.
This forum is not a free platform for you to cheat and get free answers. I will leave this up for you to solve.
See, the goal of this forum is for question askers(like you) to learn from answers(by us).
Voldemort is trying to help you learn, so you won't have to ask for help next time.
We are willing to help you and WILL help you if you can explain to us what you have tried. Our goal is to help you learn, and that can only be done with your co-operation...