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Cerrena [4.2K]
3 years ago
8

Which pair of lines are perpendicular

Mathematics
2 answers:
kupik [55]3 years ago
6 0

Two lines are perpendicular if their slopes multiply to -1. That means we have to look at each individual answer and see if the slopes multiply to -1.


y = 2x - 1 has a slope of 2


2y = -x + 3

y = -1/2x + 3 This has a slope of -1/2.


2 * -1/2 = -1.


Since the slopes of these lines multiply to -1, the answer is A. Since we have our answer, we don't have to do anything else.

Gnesinka [82]3 years ago
5 0

The answer is A. A perpendicular equation will have the opposite and reciprocal slope as the original equation.


Once converted to the slope-intercept form of y = mx+b, we find the two equations for A are y = 2x-1 and y = (-1/2)x + 3/2. The opposite reciprocal of the first equation's slope (m in the equation form given) is -1/2, which as you can see if the slope of the other equation.

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