Terms of Use

By using Algebra911 you accept the terms below. They are short and written in plain English.

Using the site

Algebra911 is free for students, parents and teachers. You do not need permission to read a lesson, print a worksheet or use a calculator.

What you may do

• Print our worksheets and answer keys and hand them out in a classroom, a tutoring session or at home.
• Link to any page on this site.
• Quote a short passage with a credit and a link back to the page it came from.

What you may not do

• Republish our lessons, diagrams or worksheets on another website, app or printed product.
• Sell our worksheets or PDFs, or include them in a paid product or paid membership.
• Copy our material and present it as your own, or strip the Algebra911 name from a worksheet.
• Scrape the site automatically or in bulk.

Copyright

All lessons, explanations, diagrams, worksheets and answer keys on Algebra911 are original work and are protected by copyright. If you would like to use our material beyond what is allowed above, ask us first via the contact page.

Educational use only

Algebra911 is published for general information and educational purposes only. The lessons, worksheets, answer keys, diagrams and calculators on this site are study aids — they are not professional, academic, financial, engineering or any other kind of advice, and they are not a substitute for instruction from a qualified teacher or for your school's own curriculum and grading.

Accuracy and your responsibility

We check our material for mathematical accuracy, but no site is perfect and errors can occur. All content is provided "as is" and "as available", without warranties of any kind, express or implied, including any warranty of accuracy, completeness, fitness for a particular purpose or non-infringement.

Use of the information on this site is entirely at your own risk and remains your responsibility. You are responsible for verifying any result, method or answer before relying on it — especially for homework, exams, teaching or any decision that matters. To the fullest extent permitted by law, Algebra911 and its team accept no liability for any loss, damage, lost marks or other consequence arising from the use of, or reliance on, anything published here.

How our content is created

Content on Algebra911 is written and reviewed by the Algebra911 team, with the assistance of artificial intelligence tools used for drafting, generating practice problems and producing diagrams. Every page is intended to be original material, reviewed before publication. Even so, AI-assisted content can contain mistakes — see the section above.

Found a mistake?

If you spot an error in a lesson, a worksheet or an answer key, please tell us and we will fix it for everyone. Contact us here →

Third-party links and ads

We are not responsible for the content, accuracy or availability of sites we link to, or of advertisements served by third parties.

Changes

We may update these terms. Continuing to use the site after a change means you accept the updated terms.