1. Graphical Representation of Linear Equations and Functions
Chapter 6 Section 1
Graphical Representation of Linear Equations and Functions

2. Essential Questions
How do you find solutions to equations that have two variables?
How do you graph linear functions by plotting points?

3. Important Vocabulary Origin X-axis Y-axis X-coordinate Y-coordinate
Ordered pair
plane

4. Graph: x – 2y = 1 What’s the x-intercept? What’s the y-intercept?
Rewrite the equation in function notation?
Is the ordered pair (4, -2) a solution to this equation?
Is the ordered pair (-1, -1) a solution to this equation?

5. Horizontal and Vertical Movement from Origin

6. Practice Creating an Equation with 2 Variables
A small business photocopied a report that included 12 black and white pages and 25 colored pages. The cost was $ Letting b equal the cost for a black and white page and c equal the cost for a color page, write an equation with two variables.