Question 1182212
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f<sup>−1</sup>(x) has x's and y's swapped from F(x).

Given f(x) = 7x + 4 , determine the value of f<sup>−1</sup>(−3) 

That's the same as asking

Given y = 7x + 4, determine the value of x when y = −3.

     -3 = 7x + 4
     -7 = 7x
     -1 = x

f<sup>−1</sup>(−3) = -1 

Edwin</pre>