***DO SOON***Please solve. Can't figure it out for the life of me and I need to finish his test. Thank you!

Place the following steps in order to complete the square and solve the quadratic equation,

In a graph with several intervals o data how does a constant interval appear? what type of scenario produces a constant interval?

Two times a number plus three times another number equals 4. three times the first number plus four times the other number is 7. find the numbers