You can't. One has nothing to do with the other.
no
no
Yes. The non-custodial parent will then be owed the support while child is in there care. But it doesnt relenquish them from their prior debt. If the monies is owed direct to you and not a child supporting agency you can come to an agreement with the other party to resolve the debt and have it entered into a court agreement.
The court will enter a default judgment against them. Better to show up and have a say in what is going to happen.
In general, child support is based on ability to pay, not other factors such as whether the non-custodial parent is involved in the child's life.
see links below
no the child is already 18 then they are legally an adult and the parent doesnt need to pay child support
see links
Yes...a mathematical equation set by your states Child Support Guidelines may be found via the internet. In Florida it is custodial parent- 49% and non-custodial parent- 51% of ALL expenses incurred regarding the children, rent, car payment, insurance, daycare etc...etc...(Obviously the custodial parent doesnt really pay the 49% but has that number as an expense).
probably Depends on circumstances, but if he's not voluntarily, why does it matter?
That depends on where you live. In some states, if the non-custodial parent refuses to hold up their end of the bargain in the custody agreement, which often includes provisions regarding child support, he may have visitation rights or other parental rights terminated if deemed so by the court of jurisdiction. In other states, child support and visitation are two separate issues that do not overlap. While the custodial parent can file an action against the person not paying child support, the fact that he isn't paying won't interfere with visitation, at least not until he goes to jail for failure to pay. You would have to contact an attorney in your state of residence for more information.
No the child support does not give you parental rights, Speak to the Local bracnh of Citizens Advise. You should have parental rights peried but to us men they are not worth the paper they are on. Law always sides with mother.