SAT Math Practice Question #2136 (Hard) | Test Citadel
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SAT Math Difficulty: Hard

Digital SAT Math Practice Question #2136

Test your problem-solving accuracy on this official-caliber item. Select an answer choice to check your reasoning instantly.

In the equation $-6x + 20 = kx + 20$, $k$ is a constant. If the equation is true for all real values of $x$, what is the value of $k$?
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Socratic AI Engine Step-by-Step Derivation
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⚡ 15-Second Desmos Speed Hack

Desmos / Fast Rule: No solution $\implies$ equal slopes, different intercepts. Infinite solutions $\implies$ completely identical expressions.

Masterclass Solution & Distractor Trap Analysis

Identical expressions require the coefficient of $x$ to be $-6$ and the constant to be $20$....

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

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