Linear Functions 1

1. Linear Functions
Lesson 1

2. Cartesian Plane
Vocabulary Review
• Coordinate System
• Origin
• X-Axis
• Y-Axis II I
• X-Coordinate
• Y-Coordinate 3
• Ordered Pair
• Relation
• Graph
(1,0)
(2,-1) III -2 IV(3,-2)
(3,-2)
• Quadrants (4,-3)

3. How do we organise our coordinate plane?
Scale?
Look at the function first

4. Graphing Linear Functions
2y - 6x = 4 -1 ≤ x ≤ 3
1. Put Function in form y = 3x + 2
2. Choose Scale
3. Draw and Label the Axes Neatly and Indicate Scale
4. Calculate and Tabulate Coordinates
5. Draw the graph Neatly to fill the axes
6. label Graph Y y = 3x + 2
X Y 11
10
-1 -1
0 2
2
3 11 0
-1
-1 3 X

5. 2x + 2y = 10
3x = 4y + 8