given $q(r) = r^2 - 4$, evaluate.

$q(2)$

Question

given $q(r) = r^2 - 4$, evaluate.

$q(2)$

Accepted Answer

{ "quality": "clear", "question_count": 1, "skills_matched": [ "step_cot", "blank_filling_formatter", "explain_then_answer", "tutor", "mastery_adaptive_brevity" ], "needs_drawing": false, "concepts_used": [ "Function Evaluation" ], "new_concepts": [], "current_concepts": [ "Function Evaluation", "Quadratic Functions" ] } ## Substitute the value into the function Using the *Function Evaluation* knowledge point $$ \begin{aligned} &q(r) = r^2 - 4\ &r = 2\ &q(2) = 2^2 - 4 \end{aligned} $$ ## Simplify the expression Using the *Function Evaluation* knowledge point $$ \begin{aligned} &q(2) = 4 - 4\ &q(2) = 0 \end{aligned} $$ Given $q(r) = r^2 - 4$, evaluate. $q(2)$ = 0 { "subject": "Mathematics", "question_type": "Fill-in-the-blank", "knowledge_point": [ "Mathematics", "Algebra", "Function Evaluation" ] }

Sovi.AI - AI Math Tutor

QUESTION IMAGE

Question

Explanation:

Substitute the value into the function

Simplify the expression

Answer: