Question the-fu
1.2 Linear Equations in One Variable - Single-variable equations (multi-step)
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The function is defined by . For what value of does ?
Enter your answer:
The function f is defined by f x = 9 7 x + 8 7 .
Hard-difficulty · SAT Math · Linear Equations in One Variable — Single-variable equations (multi-step). Read the question above, select your answer, and check the full explanation below to understand exactly why the correct choice works.
Answer explanation
The correct answer is . Substituting for in the given function yields . Multiplying each side of this equation by yields , or . Subtracting from each side of this equation yields . Dividing each side of this equation by yields . Therefore, when the value of is .
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