Why it Matters: Linear Functions
Why learn about linear functions?
Joan wants to travel but doesn't have a lot of extra spending cash. She read on several travel blogs that a good way to travel is to get a credit card with air miles and use it for all the things you normally budget for. This way, a big chunk of your airfare can be paid for with air miles.
She applied for and got a credit card with air miles. Joan has planned to use her air miles card for the following things each month:
- gas = $30
- car insurance = $40
- mobile phone bill - $65
- groceries = $150
- entertainment - restaurants, movies, and live music = $50
The learning objectives for this module include:
- Calculate and interpret the slope of a linear function
- Graph a linear function using slope and intercepts
- Write the equation for a function given points, or a description and initial conditions
- Graph linear functions and interpret their meaning for applicaitons