Help please!!! Don’t answer just for points I’m really struggling lol. What can be filled in for the letters?

3. solve by graphing: y = 2x + 6 x + y = -3

Me! last question, and i'm stuck! write the algebraic expression that models the word phrase. the product of 2 divided by the number h and 8 more than the number k

Two trains leave stations 546 miles apart at the same time and travel toward each other. one train travels at 95 miles per hour while the other travels at 115 miles per hour l. how long will it take for the two trains to meet