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Linear functions SAT question
Math · Algebra · Easy · Answer it here, explanation included.
The function is defined by . For what value of does ?
ExplanationShow
Choice A is correct. It's given that the function is defined by . Substituting for in this equation yields . Subtracting from both sides of this equation yields . Dividing both sides of this equation by yields . Therefore, the value of when is .
Choice B is incorrect and may result from conceptual or calculation errors.
Choice C is incorrect and may result from conceptual or calculation errors.
Choice D is incorrect. This is the value of , not the value of when .
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