Question

Solve y=f(x) for x. then find the inputs when the output is -3

Answer 1

Given that,

`f(x)=-7x-2`

To find the inputs when the output is -3 ​

that is, when f(x)=-3, to find the value of x

Put f(x)=-3 in the above equation we get,

`-3=-7x-2`
`-7x=-3+2`
`\begin{gathered} -7x=-1 \\ x=(1)/(7) \end{gathered}`

Answer is: x=1/7.