Question 45025
given f(x) = 3x + 4 
1.is f(x) a function? why or why not?
Yes, there are no y-values that result in the same value for 'x'.
{{{ graph( 600, 600, -10, 10, -10, 10, 3x + 4) }}}
2. find f^-1(x)
f(x) = 3x + 4
y = 3x + 4
x = 3y + 4
x - 4 = 3y
(1/3)x - (4/3) = f^-1(x)
Yes, there are no y-values that result in the same value for 'x'.
{{{ graph( 600, 600, -10, 10, -10, 10, x, 3x + 4, (1/3)x - (4/3)) }}}