Determine the  Solution Set   to a   Linear Function   by   The  Slope  Method

 

Given:  2C – 4D = 4 Determine Solutin Set!  Solve Given Function for N:

 

2C – 4D = +4              –4D = –2C +4 D  =  +1/2 C – 1

 

Now:  D = mC + b     therefore        m = + 1 / 2   and   b = –1

 

Place a triangle with a rise = 1 and run = 2 with a    ( + ) Slope   on the D axis at  –1

 

                                                                                                                        C                                    

 

 

                                                                                                        D                                    

                                                                                                                                       

 

 

 

 

 

 

Check Solution Set with Arbitary Point:    C = –2   then   D = ?

Substitue   C = –2   into Linear Function and Solve for   D = – 1/2

 

2C – 4D = +4              +2(–2) – 4D = +4        –4D = +8         D = –2

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Determine the  Solution Set  to a  Linear Function  by The  Slope  Method

 

Given:  +2W + 3Z = -6   Determine Solution Set!    Solve Given Function for Z:

 

+2W +3Z = –6              +3Z = –2W +4              Z =  –2/3Z  – 2

 

Now:  Z = mW + b    therefore        m = –2/3   and   b = –2

 

Place a triangle with a rise = 2 and run = 3  with a   ( – ) Slope   on the Z axis at  –2

 

                                                                                                                                  

                                                                                                                                      W                                         

 

 

                                                                                                                                                Z                                       

 

 

 

 

 

 

 

 

Check   Solution Set with Arbitary Point:    W = –1    then    Z = ?

Substitue   W = –1   into Linear Function and Solve for   Z = –4/3

 

+2W +3Z  = –6           +2(–1)  + 3Z  = –6      +3Z  = –4        Z = –4/3

 

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Tom Love                         Malone College                        Fall 2003