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4             4
                    (d)  y =  −  x +  8,  m = −  and  (0, 8)
                             5             5
                                    8
                    (e)   y =  8,x   m =  and   (0, 0)
                               70                 70 
                    (f)  y =  3x +  ,   m =  and  0,  
                                        3
                                               
                               13                 13                                           Tanzania Institute of Education

                    Exercise 6.5


                                3
                                                     6
               1.   (a) y =  2x −        (c)  y =  3x −                     (e)  y = − 3x
                                                 3
                    (b)  y =  −  2x +  5        (d)  y =  x − 1
                                                 2

                                                       80
               3.    (a) y =  2x − 1             (c)  5x +  2y −=             (e)   x +  3y −  12 0=
                                                   6    22
                     (b) 3x y+− 19 0=    (d)   y =  −  x +
                                                   5     5
               5.      2x – 3y + 12 = 0
               6.      (a) y = 5         (b)  x = 2                  (c)  4x + 3y – 12 = 0


                    Exercise 6.6


                    1.                 y
                                       6
                                       5
                           (-2, 5
                                       4
                                       3
                               (-1, 3)
                                       2
                                         (0, 1)
                                       1
                                          2x + y - 1 = 0
                           -3 -2 -1    0    1   2   3  x
                                                                                                   Mathematics Form One
                                     -1      (1, -1)
                                     -2
                                                 (2, -3)
                                     -3


                         y -intercept is (0, 1), -intercept is (0.5, 0)x





                                                 193




                                                                                        25/10/2024   09:52:25
   Mathematics form 1.indd   193                                                        25/10/2024   09:52:25
   Mathematics form 1.indd   193
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