Elementary Geometry For College Students, 7e
7th Edition
ISBN:9781337614085
Author:Alexander, Daniel C.; Koeberlein, Geralyn M.
Publisher:Alexander, Daniel C.; Koeberlein, Geralyn M.
ChapterP: Preliminary Concepts
SectionP.CT: Test
Problem 1CT
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Question

Transcribed Image Text:The image shows a graph with a line passing through three points, labeled with coordinates approximately at (-1, -2), (1, 1), and (3, 4). The x-axis ranges from -5 to 5, and the y-axis ranges from -3 to 5. The line is drawn in black and passes through the mentioned points.
Below the graph, the question asks:
"What is the slope for a line PERPENDICULAR to the line shown in the graph?"
The options given are:
A) -3
B) \(-\frac{1}{3}\)
C) 3
D) \(\frac{1}{3}\)
To solve this, recall that the slope of a line perpendicular to another is the negative reciprocal of the original slope. Calculate the original slope by taking two points on the given line, such as (1, 1) and (3, 4), and use the formula \(m = \frac{y_2 - y_1}{x_2 - x_1}\).
The line's calculated slope: \(m = \frac{4 - 1}{3 - 1} = \frac{3}{2}\).
The perpendicular slope is \(-\frac{2}{3}\) (not listed in the options, so there may have been a mistake in setup).
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