Question 201928
7. Graph:
{{{y = abs(x+4)}}} Notice that y can never be negative because the absolute value of a quantity is never negative. This shows up on the graph below. 
The graphs look like:
{{{graph(400,400,-10,5,-5,5,abs(x+4)))}}}
8. Graph:
{{{y = abs(-(1/2)x-3)}}} y can never be negative here also. See the second graph.
The graphs look like:
{{{graph(400,400,-15,5,-5,5,abs(-(1/2)x-3))}}}