+0

# help

0
78
1

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 $x$.

Guest Aug 31, 2017
Sort:

#1
+78618
+1

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

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

9x = -18                             2x = 12

x  =  -2                                 x = 6

So  .........    -2 + 6  =  4

CPhill  Aug 31, 2017

### 10 Online Users

We use cookies to personalise content and ads, to provide social media features and to analyse our traffic. We also share information about your use of our site with our social media, advertising and analytics partners.  See details