How i solve the ncert class 9th question of chapter linear equations in two variables of exercise 4.3 question number 7. Please give me the simplest and easiest solution of this question ,also give me the best solution of this question. Yamini and Fatima, two students of Class IX of a school, together contributed ₹ 100 towards the Prime Minister’s Relief Fund to help the earthquake victims. Write a linear equation which satisfies this data. (You may take their contributions as ₹ x and ₹ y.) Draw the graph of the same.