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Line A passes through the points (−3, 2) and (−23, 54). Line B is parallel to line A and passes through the point (−8, 0). What is the equation of line B?

A) y = 2x - 8
B) y = 4x + 8
C) y = 2x + 16
D) y = 4x - 16

User Misaz
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1 Answer

1 vote

Final answer:

The slope of line A is determined using the coordinates given for line A and found to be -2.6. Since line B is parallel to line A, it will have the same slope. The point-slope form is then used with the point through which line B passes to find the equation of line B, which is y = -2.6x + 20.8. However, this equation is not matched by any of the provided answer choices.

Step-by-step explanation:

To determine the equation of line B that is parallel to line A, we first need to establish the slope of line A. The slope formula is m = (y2 - y1) / (x2 - x1). Using points (−3, 2) and (−23, 54), the slope is:

m = (54 - 2) / (−23 + 3)

m = 52 / -20

m = -26 / 10

m = -2.6

Since line B is parallel to line A, it has the same slope, m = -2.6. We can use the point-slope form which is y - y1 = m(x - x1), where (x1, y1) is the point line B passes through, which is (−8, 0). Substituting the values, we get:

y - 0 = -2.6(x - (-8))

y = -2.6x - 2.6*(-8)

y = -2.6x + 20.8

To put the equation in slope-intercept form (y = mx + b), we simplify to:

y = -2.6x + 20.8

However, none of the given options match this equation exactly due to a different slope. Hence, there might be a typo in the question or the set of answer choices provided. In a standard multiple-choice scenario, you would select the answer that most closely represents the correct equation, which is not present among the options A, B, C, and D.

User Clomp
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