Much confusion surrounds the need to submit I751 affidavits and how to write them. We explain and provide an I-751 affidavit sample.General Affidavits are written statements of fact used to support your case or verify facts that are sworn to be true in front of a notary public. Making an Affidavit Form online is simple. Just answer a few questions, and Rocket Lawyer will build your document for you. An affidavit or letter can be used to fill gaps, corroborate or support other evidence or explain shortcomings or weaknesses in a petition. This page contains forms available for download from this site. Form Preview Example. Per a new state law, Tarrant Appraisal District is sending homeowners letters asking them to confirm their homestead exemption. Much confusion surrounds the need to submit I751 affidavits and how to write them.