1. The ₹10 coin is an alloy of copper and nickel in the ratio 3:1 by mass. The total mass of the coin is 7.74 grams. If copper costs ₹906 per kg and nickel costs ₹1,341 per kg, what is the total cost of the metals contained in one such coin?

2. Which statement best describes the relationship between x and y in the table?

3. Which graph is non-proportional?

4. Is this table proportional?

5. Is this graph proportional?

6. Why does this graph show a non-proportional relationship?

7. What is the unit rate in this proportional relationship?

8. What is the total cost of tickets if there are 7 adults?

9. Determine the missing value in the table.

10. What letter is located at (5, 7)