/*! This file is auto-generated */ .wp-block-button__link{color:#fff;background-color:#32373c;border-radius:9999px;box-shadow:none;text-decoration:none;padding:calc(.667em + 2px) calc(1.333em + 2px);font-size:1.125em}.wp-block-file__button{background:#32373c;color:#fff;text-decoration:none} Problem 52 Find the slope of the line conta... [FREE SOLUTION] | 91Ó°ÊÓ

91Ó°ÊÓ

Find the slope of the line containing each given pair of points. If the slope is undefined, state this. $$ (5,-2) \text { and }(-4,-2) $$

Short Answer

Expert verified
The slope is 0.

Step by step solution

01

- Understand the Slope Formula

The slope of a line through two points \(x_1, y_1\) and \(x_2, y_2\) is given by the formula: \[ m = \frac{y_2 - y_1}{x_2 - x_1} \] where \(m\) represents the slope.
02

- Identify the Coordinates

The given points are (5, -2) and (-4, -2). Assign the coordinates as follows: \((x_1, y_1) = (5, -2)\) and \((x_2, y_2) = (-4, -2)\).
03

- Substitute Values into the Formula

Substitute the coordinates into the slope formula: \[ m = \frac{-2 - (-2)}{-4 - 5} \]
04

- Simplify the Expression

Simplify the expression: \[ m = \frac{-2 + 2}{-4 - 5} = \frac{0}{-9} \]
05

- Interpret the Result

Since the numerator is 0 and the denominator is non-zero, the slope \(m\) is 0. This means the line is horizontal.

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Key Concepts

These are the key concepts you need to understand to accurately answer the question.

coordinate geometry
Coordinate geometry, also known as analytic geometry, uses a coordinate system to define and represent geometric shapes. This system is essential in locating points on a plane and describing the relationships between them.
The fundamental elements in coordinate geometry include:
  • Points: Defined by coordinates \( (x, y) \), where \( x \) and \( y \) are numerical values representing the location on the horizontal and vertical axes, respectively.
  • Lines: Determined by the equation \[ y = mx + b \], where \( m \) represents the slope and \( b \) the y-intercept.
Understanding these basics allows us to explore more complex geometrical relationships and solve problems involving distances, midpoints, and slopes, as shown in this exercise.
slope formula
The slope formula is a key concept in coordinate geometry. It helps us determine the steepness or incline of a line between two points. The formula is:
\[ m = \frac{y_2 - y_1}{x_2 - x_1} \]
Here's how it works:
  • \
horizontal line
A horizontal line is a special type of line in coordinate geometry. It runs parallel to the x-axis and has some unique characteristics:
  • Zero Slope: The slope of a horizontal line is always 0, as seen in our example. This is because there is no vertical change between any two points on the line.
  • Equation of the Line: The equation for a horizontal line can be written as \( y = c \), where \( c \) is a constant. For our exercise, the points (5, -2) and (-4, -2) lie on the line \( y = -2 \).
Recognizing horizontal lines is crucial, as they indicate that all points on the line have the same y-coordinate and no vertical movement.

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