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What is the equation in point-slope form of the line that passes through the points (3, 4) and

(-3, -8)?
A. y-8 = {(x+3)
B. y+8 = -(x – 3)
C. y +8 = {(x+3)
D. y-8= (x+3)

User Hermiod
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1 Answer

4 votes

Final answer:

The correct point-slope form equation of the line passing through the points (3, 4) and (-3, -8) is y - 4 = 2(x - 3). The calculation involves finding the slope and then using the point-slope form equation with one of the given points.

Step-by-step explanation:

To find the equation of the line in point-slope form that passes through the points (3, 4) and (-3, -8), we first need to calculate the slope of the line. The slope (m) is found using the formula m = (y2 - y1) / (x2 - x1), where (x1, y1) and (x2, y2) are the coordinates of the two given points. Substituting the values from the points gives us:

m = (-8 - 4) / (-3 - 3) = (-12) / (-6) = 2.

Now, using one of the points, say (3, 4), and the slope, the point-slope form equation is written as:

y - y1 = m(x - x1), where m is the slope and (x1, y1) is a point on the line.

Substituting the values into the point-slope form gives us:

y - 4 = 2(x - 3).

Therefore, the correct point-slope form equation for the line passing through the given points is y - 4 = 2(x - 3). None of the options provided (A, B, C, or D) match this equation exactly, so there may be an error in the question or the response options.

User Atimb
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