Create an AssessmentFunction for an algebra question:

Use it to assess an equivalent form of the answer:

Create an assessment function to find where a line intersects a circle:

Check a correct answer:

Define code that finds a solution:

The code is not marked as correct because it contains algebraic solving code:

Allowing the code to evaluate to a correct answer before assessment gives a correct marking:

Calculate a solution to an equation:

Create an assessment that accepts alternate forms of answers containing the variable x as the result name:

The regular answer does not need to include the variable name that is searched for:

The alternate forms accepted are:

The use of any other variable name results in a false assessment:

The variable name can be inferred from the answer key if it uses any of the allowed alternate forms:

The variable name needs not to figure in the answer:

Compute the solution to an equation reduction problem:

Define an assessment function:

All equations equivalent to the correct answer are accepted:

The original question is not accepted as an answer:

Create an assessment function for an inequality:

Equivalent inequalities are marked as correct:

Use "AlgebraicForm" to more tightly limit accepted answers:

Create a QuestionObject for an algebra problem with multiple correct answers:

Create a QuestionObject for a geometry question:

Create a polynomial solving problem including a plot to help find values. Setting "OptionalResultName" allows flexibility in the accepted answer forms:

Evaluation for operations not considered to be algebra occurs even when the answer is held:

When values are held, global definitions are ignored during assessment:

Global definitions may also conflict with the name specified for the "OptionalResultName", if the variable is not held:

Wrap the variable into Hold or HoldPattern to ignore the global definition:

"AlgebraicValue" method allows functions, like Plus, that do not solve algebraic problems to evaluate:

Functions that do solve algebraic problems do not evaluate and are marked incorrect:

"CalculusResult" allows the algebraic solving functions to evaluate:

Create an answer key using Solve for multiple variables:

Creating an AssessmentFunction with the default "ListAssessment" setting treats each list in the key as a single answer:

Only answers identical to the keys are considered as correct:

Even with the setting "OptionalResultName"True, values without variable names are marked as incorrect:

Instead, use "AllElementsOrderless" or "AllElementsOrdered" as the "ListAssessment" setting to assess each subvalue independently:

Each individual element of the key and answer is matched separately, and the "OptionalResultName" setting works as expected:

Mathematically equivalent results that differ only by arithmetic are accepted:

To provide answers using an equal sign, use Hold to prevent setting values: