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Which line is perpendicular to a line that has a slope of [tex]$-\frac{5}{6}$[/tex]?

A. line JK
B. line LM
C. line NO
D. line PQ

Answer :

Certainly! To solve this problem, you need to determine which line is perpendicular to a line with a slope of [tex]\(-\frac{5}{6}\)[/tex].

1. Understand Perpendicular Slopes:
- Two lines are perpendicular if the product of their slopes is [tex]\(-1\)[/tex].
- To find the slope of a line perpendicular to a given line, you take the negative reciprocal of the original slope.

2. Calculate the Perpendicular Slope:
- The given slope is [tex]\(-\frac{5}{6}\)[/tex].
- To find the perpendicular slope, calculate the negative reciprocal of this slope:
- First, find the reciprocal of [tex]\(-\frac{5}{6}\)[/tex], which is [tex]\(-\frac{6}{5}\)[/tex].
- Next, change the sign to make it negative or positive (since the original is negative):
[tex]\[
\text{Perpendicular slope} = \frac{6}{5} \approx 1.2
\][/tex]

3. Conclusion:
- A line with a slope of [tex]\(1.2\)[/tex] is perpendicular to the line with the original slope of [tex]\(-\frac{5}{6}\)[/tex].
- Among the options given (line JK, line LM, line NO, line PQ), the correct choice would be the one that has this slope of [tex]\(1.2\)[/tex].

Remember: the key to finding a perpendicular line is focusing on the negative reciprocal of the slope.

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