Question 43585
{{{f(x) = 7x - 2}}}
Switch the variables to get the inverse of {{{f(x)}}}.
{{{y = 7x - 2}}}
{{{x = 7y - 2}}}
{{{x/7 + 2/7 = y}}}
{{{f^(-1)(x) = (1/7)x + 2/7}}}
{{{ graph( 600, 600, -10, 10, -10, 10, x, 7x - 2, x/7 + 2/7 ) }}}