SAT Math Practice Question #2229 (Medium) | Test Citadel
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SAT Math Difficulty: Medium

Digital SAT Math Practice Question #2229

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What is the minimum value of $f(x) = (x - 4)^2 + 9$?
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Masterclass Solution & Distractor Trap Analysis

In the vertex form $f(x) = a(x - h)^2 + k$, the vertex is at $(h, k)$. Since $a = 1 > 0$, the parabola opens upward and the minimum value is the $y$-coordinate of the vertex, which is 9....

Distractor Analysis: Trap choice eliminates careless test-takers who confuse roots with coordinates...

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