Unit 5 systems of equations & inequalities homework 9

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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 ûûûû, 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 haveûûû.

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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