Lesson 5

Complete questions 11, 12, and 14 on pages 437 and 438 in the textbook. Answers

Try This 4

You have just learned how to relate a system of equations to a given context. In Try This 4 you will work through an interactive example to see how you can model a situation based on a quadratic-quadratic system of equations. You will be led through a series of steps that will enable you to solve a measurement problem.

Work through Modelling with a Quadratic-Quadratic System: Waldo’s Sign.

Example 2: Vertical Curves

Turn to “Example 4” on page 430 of the textbook to study a problem involving vertical curves. Look for the answers to the following questions as you read through the problem:

• What is the purpose of a vertical curve in the design of roadways?
  
  
• What kinds of systems of equations are used to solve the problem? How many systems of equations are used?

Self-Check 3

Complete questions 10, 13, and 15 on pages 437 and 438 in the textbook. Answer