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Zielflug [23.3K]
3 years ago
10

Please help i dont understand

Mathematics
1 answer:
lozanna [386]3 years ago
6 0

Answer:

D


Step-by-step explanation:

f(x) = 3x + 1


Changing x to y and y to x:


f(x) = 3x + 1 \\\ y = 3x + 1 \\\ x = 3y - 1 \\\ 3y = x + 1 \\\ y = \frac{x + 1}{3} \\\\\ f(x) = \frac{x + 1}{3} \\\\\ f(x) = \frac{1}{3}x + \frac{1}{3}


I hope I helped you

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