Digital SAT Math Practice Question #2415
Test your problem-solving accuracy on this official-caliber item. Select an answer choice to check your reasoning instantly.
Desmos Hack: Graph the function and inspect the curve's features (vertex, intercepts, asymptotes) or evaluate points directly.
$y = (x+4)/2 \implies 2y = x + 4 \implies x = 2y - 4$. Swapping gives $f^{-1}(x) = 2x - 4$....
Distractor Analysis: Trap choice eliminates careless test-takers who confuse roots with coordinates...
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