How do you find the inverse of #y=log(x-3)#? Precalculus Properties of Logarithmic Functions Common Logs 1 Answer Noah G Aug 12, 2016 Switch around the x and y values: #y = log(x - 3)# #x = log(y - 3)# #10^x = y - 3# #y = 10^x + 3# #f^-1(x) = 10^x + 3# Hopefully this helps! Answer link Related questions What is the common logarithm of 10? How do I find the common logarithm of a number? What is a common logarithm or common log? What are common mistakes students make with common log? How do I find the common logarithm of 589,000? How do I find the number whose common logarithm is 2.6025? What is the common logarithm of 54.29? What is the value of the common logarithm log 10,000? What is #log_10 10#? How do I work in #log_10# in Excel? See all questions in Common Logs Impact of this question 1988 views around the world You can reuse this answer Creative Commons License