Hel p plz plz

If f(x)=3x+1 and f^-1=x-1/3, then f^-1(7)=

Question: a) does the given set of points represent a linear function? how do you know? b) assume that the point (-2,4) lies on the graph of a line. what y-values could complete this set of ordered pairs that lie on the same line: (- (hint: there are several correct answ

Which expression is equivalent to -5(3x - 6/7)