,PROJECT ,,9SPIRE
        ,NEME? 9 A ,BOX
           ,LESSON #D

    ,SYMBOL LI/
"3333 SEP>A;N L9E = TABLES
(4, 9) EXAMPLE ORD]$ PAIR )
  MA!MATICAL COMMA
















                              #A
6333333333633333333363333333334
L         L         L         _
   ,/>T      -#5       -(37)  _
L         L         L         _
H333333333H333333333R3333 3333W
                    L         _
                    L  \-42\  _
                    L         _
                    R3333 3333W
                    L         _
                    L (3, 4)  _
                    L         _
63333333336333333333R3333 3333W
L         L         L         _
L \-907\     -#549    (2)(-8) _
L         L         L         _
R3333 3333R333333333H333333333J
L         L
L (-1, 5) L
L         L
R3333 3333R3333333337
L         L         =
L (-6)(8)    ,F9I%  =
L         L         =
H333333333H333333333G         #B
         ,:AT IS ,WR;G
           ,LESSON #D

  ,*ECK \ ? PUZZLE4 ,R1D !
EXPRES.NS 9 EA* ( ! F\R
QUADRANTS4 ,F9D 8,:AT IS ,WR;G0
) EA* ( ! F/ ?REE4 ,X IS A
COMMON MI/AKE4 ,! LA/ "O IS ALW
CORRECT4 ,IF Y ?9K Y >E ON A
ROLL1 TRY TO F9D TWO MI/AKES 9 !
*ALL5GE PUZZLE4
  ,OP5 P>5!SIS "O COMMA NEGATIVE
TWO CLOSE P>5!SIS _%

PCCCCCCCCCCCCCPCCCCCCCCCCCCC?
L             L             _
L   (A, -B)   L   (1,-2)    _
L             L             _
R3333333333333R3333333333333W
L             L             _
L  (#1, -#2)  L   (1, -2)   _
L             L             _
V-------------V-------------#

_:                            #C
    ,*ALL5GE "<,F9D TWO
    MI/AKES4">
  ,OP5 P>5!SIS NEGATIVE TWO
COMMA PO9T F\R CLOSE P>5!SIS
  _% (-#2, #.4) _:



















                              #D
     ,: ,"O ,DOESN'T ,2L;G
           ,LESSON #D

    ,R1D ! EXPRES.NS 9 EA* ( !
  F\R QUADRANTS & %>E YR R1SON+
  Z TO 8,: ,"O ,DOESN'T ,2L;G &
  ,:Y80 ,! GRT ?+ AB ? IS T "!
  >E NO WR;G ANSW]S1 Z L;G Z YR
  R1SON+ IS TRUE4 _%
#1_4

PCCCCCCCCCCCCCCPCCCCCCCCCCCCCC?
L              L              _
L   (-3, -5)   L   (-5, 5)    _
L              L              _
R33333333333333R33333333333333W
L              L              _
L    (5, 4)    L   (2, -3)    _
L              L              _
V--------------V--------------#




                              #E
#2_4

PCCCCCCCCCCCCCCPCCCCCCCCCCCCCCC?
L              L               _
L   ;X  ;Y     L ;X     ;Y     _
L   "3  "333   L "3333  "33333 _
L   #1  #0.5   L ?1/2#  ?1/4#  _
L   #2  #1.5   L ?1/3#  ?1/9#  _
L   #3  #2.5   L ?1/4#  ?1/16# _
L              L               _
R33333333333333R333333333333333W
L              L               _
L  ;X   ;Y     L   ;X  ;Y      _
L  "33  "333   L   "3  "333    _
L  -#3  #0     L   #1  @S15    _
L  -#2  -#5    L   #2  @S30    _
L  -#1  -#10   L   #3  @S45    _
L              L               _
V--------------V---------------#

_:



                              #F
         ,:AT IS ! ,"Q
           ,LESSON #D

  ,N[ IS YR *.E TO 2 CR1TIVE6 ,Y
W 2 GIV5 ! ANSW] & NE$ TO COME
UP ) A "Q : GIVES Y T ANSW]4 ,"!
IS AN EXAMPLE ( A "Q TO GET Y
/>T$1 B Y M/ COME UP ) YR [N4
,H[ H>D C Y MAKE X & / COME UP )
! SAME ANSW]8 ,H[ _M DI6]5T
SYMBOLS C Y USE & / GET T SAME
ANSW]8
  ,ANSW]3 _% (-4, 0), _:
  ,"Q EXAMPLE3 ,! PO9T #E UNITS
UP F _% (-4, -5) _:
  ,YR "Q T GIVES ! SAME ANSW]3








                              #G