SAT Math Practice Question #2137 (Medium) | Test Citadel
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SAT Math Difficulty: Medium

Digital SAT Math Practice Question #2137

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In the equation $9x + 3 = kx + 3$, $k$ is a constant. If the equation is true for all real values of $x$, what is the value of $k$?
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Desmos / Fast Rule: No solution $\implies$ equal slopes, different intercepts. Infinite solutions $\implies$ completely identical expressions.

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Infinitely many solutions occur when the linear equation reduces to a true identity like $0 = 0$....

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