Lesson 1 relations and functions apr 26
- 1. Representing and Interpreting Relations Four ways to represent Data. What are they? 1) 2) 3) 4) 1
- 2. Words • The amount of interest I earn depends on how long I invest it, what interest I earn and how much money I started with. • Interest equals principal multiplied by the rate multiplied by the time Where the rate is a decimal and time is in years. • Interest = principal x rate x time 2
- 4. Table Time Interest 1 year $60.00 2 years $120.00 3 years $180.00 4 years $240.00 4
- 5. Graph $1000 invested at 6% per annum 5
- 6. Independent Variable: *the term in the relation that you can control *the variable whose value you choose *the value on the xaxis Dependent variable: *the term that depends on what you choose *the variable that is calculated by the formula when an independent variable is chosen. *the value on the yaxis. Which is independent and which is dependent? time at the keyboard number of word typed points scored shots taken amount of chocolate consumed cupcakes eaten amount of food bought cost of groceries 6
- 9. dependent Gross Pay V s Time Pay independent Hours worked 9
- 10. Assignment Read page 247251 Do p 254 Que. 17 Answers p 463 at the back of the booklet 10