For the first question we just need to define a ratio in our own words so a possible solution is:
1) A ratio is defined as a proportional measure between two negative values (own words)
For the second question we just need to analyze which situation is better than the other and describe it in terms of ratios, so a possible solution is:
2) I would love to have the ratio of the number of ice cream to vegetables be 5:2 but I would love to hate to have the ratio of games to exams be 2:5