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UNIT 5: Systems of Linear Equations; Determinants
Section 5.1: Graphing linear equations
Objective 5.1.1: Graph linear equations by finding the coordinates of three
points
The graph of an equation whose standard form is ûûûû, where , and
are constants, is called a straight line. These equations are called linear
equations.
Note: If ûû, then we have ûû. If ûû, then we haveûûû.
The graphs of the following equations are straight lines:
ûûûûûûû ûûûû ûûû
Graphing linear equations
1. Construct a table of values with three ordered pairs
2. Plot the ordered pairs.
3. Join the plotted points by a straight line and label the graph.
Example:
Graph the equation ûûûûûûû using three points.
Xy
23.3
O2
2
21234 6210346212346
34 10YsZ
y3.5
Notes Package - Pre-Requisites (KEY)
1 - Solving Systems Graphically
p 435 # 1-3, 4bd, 9-11
2 - Solving Systems Algebraically
p 451 # 3-4 (ace), 5
3 - Solving Systems Algebraically (cont)
p 452 # 9, 12
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