one number is three times another number it is also 6 more than twice the other number what are the numbers​

Which ahows the graph of the solution set of 6x+4y< 12

What is best way to getting answer for my exam is

Jack has a piece of red ribbon that is two times as long as his piece of blue ribbon. he says that he can use two different equation to find out how long his piece of red ribbon is compared to his piece of blue ribbon is. is he correct? explain his reasoning