Question 38612
Denominators can NEVER be zero, so any value that makes a denominator equal zero is a restriction.  In this case, the denominator is 4z-6.


Therefore, the denominator 4z-6 must not be zero.
Therefore, the forbidden value would be 
4z-6=0


Add 6 to both sides:
4z=6


Divide both sides by 4:
{{{(4z)/4=6/4}}}
{{{z= 3/2}}} IS THE FORBIDDEN VALUE!!


Therefore the restriction on z is that Z must NOT equal {{{3/2}}}.


R^2 at SCC