Question

The function shown below is an invertibile function. Use the function to complete the table for its missing values of f^-1(x).

f(x)=2x+4

Answer 1

`\large{\begin{array}cf^(-1)(x)&x\\\\-2&0\\0&4\\3&10\\4&12\end{array}}`

Explanation:

`f(x)=2x+4\\\\f^(-1)(x)=f(y)=2y+4\\\\f^(-1)(x)=-2\to x=f(-2)=2(-2)+4=-4+4=0\\\\f^(-1)(x)=0\to x=f(0)=2(0)+4=0+4=4\\\\f^(-1)(x)=3\to x=f(3)=2(3)+4=6+4=10\\\\f^(-1)(x)=4\to x=f(4)=2(4)+4=8+4=12`