[tex]y = - 2x + 7 [/tex]
[tex]x = 6 \\ y = - 2 \times 6 + 7 = - 12 + 7 = - 5[/tex]
[tex]y = - 9 \\ - 2x + 7 = - 9 \\ 2x = 7 + 9 \\ 2x = 16 \\ x = 16 \div 2 \\ x = 8[/tex]
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[tex]y = - 2x + 7 [/tex]
[tex]x = 6 \\ y = - 2 \times 6 + 7 = - 12 + 7 = - 5[/tex]
[tex]y = - 9 \\ - 2x + 7 = - 9 \\ 2x = 7 + 9 \\ 2x = 16 \\ x = 16 \div 2 \\ x = 8[/tex]