Question 5 Answer & Explanation - SAT Algebra

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algebra

How many solutions does this system have? $\begin{cases} 3x + 9y = 15 \\ x + 3y = 5 \end{cases}$

Exactly one solution

Infinitely many solutions

No solution

Cannot be determined

Correct Answer: B

Choice B is the correct answer. Let's simpl Choice A is incorrect because one solution requires different slopes.

Choice C is incorrect because no solution requires parallel lines with different constants.

Choice D is incorrect because we can always determine this by simplifying.

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Linear Functions Set 53

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