Question & Answer

Find the slope of AB

Find the slope of AB

The coordinates of point A are (–3, 6) and the coordinates of point B are (3, –6). Find the slope of AB.
A. The slope is 2.
B. The slope is 0.
C. The slope is 1/2.
D. The slope is –2.

2 Answers

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MusicLed MusicLedNovember 22, 2024

To find the slope of line AB, you can use the formula for the slope (m) between two points:

[ m = frac{y_2 – y_1}{x_2 – x_1} ]

Here, the coordinates for point A (x₁, y₁) are (–3, 6) and for point B (x₂, y₂) are (3, –6).

Substituting the values into the formula gives:

[ m = frac{(-6) – (6)}{(3) – (-3)} ]

Now simplify that:

[ m = frac{-6 – 6}{3 + 3} = frac{-12}{6} = -2 ]

So, the slope of AB is D. The slope is –2. Great job on working through this! If you have more questions, feel free to ask!

Quizzma TeamNovember 22, 2024

Solution: The formula to calculate the slope (mmm) between two points (x1,y1)(x_1, y_1) and (x2,y2)(x_2, y_2) is:

m=y2y1x2x1

  1. Substituting the coordinates of A (3,6-3, 63,6) and B (3,63, -63,6):

    m=663(3)

  2. Simplify the numerator and denominator:

    m=123+3=126

  3. Simplify the fraction:

    m=2


Correct Answer: D. The slope is −2.

Explanation: The slope represents the rate of change between two points on a line, and in this case, it is calculated as 2-2.