public AccountTypeController()
{
    filterAccount = new Account();
    recordList = new Account[0];
}
public List<Account> getAccs()
{
    List<Account> results = Database.query(
        'SELECT Name, Type, Website, BillingCity, BillingStreet, BillingState, BillingPostalcode, BillingCountry, Industry ' +
        'FROM Account '
  );
  return results;
}
public List<SelectOption> Accounts()
{
    List<SelectOption> AccountList = new List<SelectOption>();
    for(Account act: [SELECT Name, Type, Website, BillingAddress, Industry FROM Account])
        AccountList.add(new SelectOption(act.Name, act.Name));

    return AccountList;

}
public void updateRecordList()
{ //this i'm thinking needs to be a pageReference to list the updatedAccounts //but im not sure how to change this
     recordList=[Select Name, Type, Website From Account Where Type = :filterAccount.Type];
}
public pageReference edit()
{  //pretty sure this is incorrect
    String contactId = Apexpages.currentpage().getParameters().get('AccountId');

    pageReference pageRef = new pageReference(URL.getSalesforceBaseUrl().toExternalForm() + '/' + AccountId + '/e?retURL=' + account.id);

    return pageRef;
}

<apex:form >

    <apex:outputPanel styleClass="requiredInput" layout="block" id="pwPanel">

        <apex:pageBlock title="Filter Accounts" id="pb" mode="edit">

            <apex:pageBlockSection >

                <apex:inputfield value="{!filterAccount.Type}" label="Account Type">

                   <apex:actionSupport event="onchange" action="{!updateRecordList}" rerender="pwPanel"/>

                </apex:inputfield>

                <!--<apex:commandButton action="{!edit}" value="Edit"/>
                <apex:commandButton action="{!save}" value="Save"/>-->

            </apex:pageBlockSection>

        </apex:pageBlock>

     </apex:outputPanel>

</apex:form>