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Answer:
f⁻¹(x) = 8x - 1
Step-by-step explanation:
Swap the positions of y (f(x)) and x and solve for y.
[tex]x=\frac{y+1}{8}\\\\8(x)=\frac{y+1}{8}(8)\\\\8x=y+1\\\\8x-1=y+1-1\\\\8x-1=y[/tex]