What is an equation that represents a non proportional relationship??? I really need help(I know nothing about proportional and non proportional equations)

Express in the simplest form: (x^2+9x+14/x^2-49) / (3x+6/x^2+x-56)

Aschool allots ? 1500 to spend on a trip to the theatre. theatre tickets have a regular cost of ? 55 each and are on offer for 1 5 off. a train ticket for the day will cost ? 12 each. if 2 teachers and the maximum number of students attend, how much money will the school have left over?

Which two fractions are equivalent to 6/11? 6/22 and 18/33 12/22 and 18/33 12/22 and 18/22 3/5 and 6/10