Question y-4-x-
1.4 Systems of Two Linear Equations - Substitution method
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The solution to the given system of equations is . What is the value of ?
A.
B.
C.
D.
y = 4 x = y + 6 The solution to the given system of equations
Easy-difficulty · SAT Math · Systems of Two Linear Equations — Substitution method. Read the question above, select your answer, and check the full explanation below to understand exactly why the correct choice works.
Answer explanation
Choice A is correct. According to the first equation in the given system, . Substituting for in the second equation in the given system yields , or .
Choice B is incorrect and may result from conceptual or calculation errors.
Choice C is incorrect. This is the value of , not .
Choice D is incorrect and may result from conceptual or calculation errors.
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