Welcome to Math 9 Unit 4: Linear Relations
Extra Practice
1. Luke is paid $9 an hour for shoveling driveways. What is the equation to represent his earnings (E) in terms of hours worked (h)?
2. If Luke works 11 hours, how much will he earn?
3. A cab company charges $3.60 plus $1.50 per kilometer. Write an equation for the total cost (C) of a ride given distance (d).
4. What is the cost of a 12 km cab ride?
5. A banquet hall arranges tables in a line. The first table seats 4 people, and each additional table adds 2 more seats. Write an equation to represent the number of seats (S) given the number of tables (T).
6. Using the equation from Question 5, determine the number of seats if there are 10 tables.
7. A plane starts descending from 9000 meters and decreases altitude by 600 meters per minute. Write an equation to represent the height (H) of the plane over time (t).
8. How high will the plane be after 15 minutes?
9. The cost (C) of renting a hall is $500 plus an additional $20 per person attending. Write an equation to represent the total cost.
10. If 30 people attend the event in Question 9, what is the total cost?