Question 148716
{{{g(x)=3x+5x}}} if x<-2
{{{g(x)=x+2x}}} if x>-2
or simplified
{{{g(x)=8x}}} if x<-2
{{{g(x)=3x}}} if x>-2
The value of g(-2) is not defined. 
You can graph it but there is no value given for -2.
There are two values as x approaches -2.
From the left, g(x) approaches -16.
From the right, g(x) approaches -6.
{{{drawing( 300, 300, -5, 5, -30, 30,grid( 1 ),line(-10,-80,-2,-16),line(-2,-6,5,15),circle( -2, -16, .2 ),circle(-2,-6,.2))}}}