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Let \[f(x) = \begin{cases} 9x+16 &\text{if }x<2, \\ 2x-14&\text{if }x\ge2. \end{cases} \]If $f(x)=-2$, find the sum of all possible values of $x$.

 Aug 31, 2017
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\(\[f(x) = \begin{cases} 9x+16 &\text{if }x<2, \\ 2x-14&\text{if }x\ge2. \end{cases} \]If $f(x)=-2$, find the sum of all possible values of $x$.\)

 

9x+ 16  =  -2                      2x - 14  = -2

9x = -18                             2x = 12

x  =  -2                                 x = 6

 

So  .........    -2 + 6  =  4

 

 

 

cool cool cool

 Aug 31, 2017

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