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Given a function f(x)=|7-4x| ,find the objects with an image 11

User RPinel
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1 Answer

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Given the function f(x) defined as:


f(x)=|7-4x|

If the image is 11, the corresponding objects (x-values) are:


\begin{gathered} |7-4x|=11 \\ 7-4x=11\ldots(1) \\ 7-4x=-11\ldots(2) \end{gathered}

Solving (1) to find the first object:


\begin{gathered} 7-4x=11 \\ 7-11=4x \\ -4=4x \\ x=-1 \end{gathered}

Now, we solve (2) to find the second object:


\begin{gathered} 7-4x=-11 \\ 7+11=4x \\ 18=4x \\ x=4.5 \end{gathered}

Answer: -1 and 4.5

User Robin Zigmond
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