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matrenka [14]
3 years ago
13

Need help ASAP

Mathematics
2 answers:
kondor19780726 [428]3 years ago
7 0

You have to substitute. So....


(-3,7): YES


y = -x + 4                              y = 1/3x + 8

7 = - -3 + 4                           7 = 1/3(-3) + 8

7 = 3 + 4                               7 = -1 + 8

7 = 7                                    7 = 7


(0,8): NO


y = -x + 4                              y = 1/3x + 8

8 = -0 + 4                             8 = 1/3(0) + 8

8 = 4                                     8 = 0 + 8

                                            8 = 8


(3,7): NO


y = -x + 4                              y = 1/3x + 8

7 = -3 + 4                              7 = 1/3(3) + 8

7 = 1                                      7 = 1 + 8

                                             7 = 9


(0,4): NO


y = -x + 4                              y = 1/3x + 8

4 = -0 + 4                             4 = 1/3(0) + 8

4 = 4                                     4 = 0 + 8

                                             4 = 8

Elena-2011 [213]3 years ago
6 0
It's the first graph (-3,7)
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