Question 7 Answer & Explanation - SAT Algebra

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algebra

Determine the value of $b$ if the lines $y = 3x + b$ and $y = 3x - 2$ intersect at infinitely many points.

$-2$

$2$

$3$

$0$

Correct Answer: A

Choice A is the correct answer. Coincident lines.

Slopes: Same (3).
Condition: For infinite solutions, intercepts must also be the same.
Result: $b = -2$ .

💡 Strategic Tip: Same slope + Same intercept = Same line.

Choice B is incorrect because sign error. Choice C is incorrect.Choice D is incorrect.

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