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Linear functions SAT question
Math · Algebra · Medium · Answer it here, explanation included.
The function is defined by , and , where is a constant. What is the value of ?
ExplanationShow
Choice C is correct. It's given that and , where is a constant. Therefore, for the given function , when , . Substituting for and for in the given function yields . Multiplying both sides of this equation by yields . Subtracting from both sides of this equation yields . Therefore, the value of is .
Choice A is incorrect. This is the value of if .
Choice B is incorrect. This is the value of if .
Choice D is incorrect. This is the value of if .
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