1
algebra

Calculate the slope of the line passing through (−3,4)(-3, 4) and (2,−1)(2, -1).

A

−1-1

B

11

C

−5-5

D

−15-\frac{1}{5}

Correct Answer: A

Choice A is the correct answer. Be careful with negative signs in the formula.

  1. Formula: m=y2−y1x2−x1m = \frac{y_2 - y_1}{x_2 - x_1}
  2. Substitute: m=−1−42−(−3)m = \frac{-1 - 4}{2 - (-3)}
  3. Simplify: m=−52+3=−55=−1m = \frac{-5}{2 + 3} = \frac{-5}{5} = -1

💡 Strategic Tip:2−(−3)2 - (-3) becomes 2+32 + 3. Double negatives are a common trap!

Choice B is incorrect because it misses the negative sign. Choice C is incorrect because it forgets to divide by the run. Choice D is incorrect because it flips rise and run.

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Linear Functions Set 82