The image of function y = (3a ^ x-1) - 1 (a is greater than 0 and a is not equal to 1) must pass the fixed point

The image of function y = (3a ^ x-1) - 1 (a is greater than 0 and a is not equal to 1) must pass the fixed point

A ^ x must pass (0,1)
1 unit to the right
A ^ (x-1) must pass (1,1)
3 A ^ (x-1) must pass (1,3)
1 unit down
{3A ^ (x-1) - 1 must pass (1,2)
Image must pass fixed point (1,2)
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