What is the inverse of #f(x) = 4x-1#?
1 Answer
May 11, 2018
Explanation:
#"let "y=4x-1#
#"rearrange making x the subject"#
#rArr4x-1=y#
#"add 1 to both sides"#
#rArr4x=y+1#
#"divide both sides by 4"#
#rArrx=1/4(y+1)#
#"the variable is usually in terms of x"#
#rArrf^-1(x)=1/4(x+1)#