Chapter 3: Problem 28
What is the slope of the line given by the equation n\(14 x-11 y+16=0 ?\) F. \(-11\) G. \(-\frac{14}{11}\) H. \(-\frac{11}{14}\) J. \(\frac{14}{11}\) K. 14
Short Answer
Expert verified
Answer: The slope of the line is \(\displaystyle\frac{14}{11}\).
Step by step solution
01
Rewrite the given equation in slope-intercept form (y = mx + b)
To rewrite the given equation (14x - 11y + 16 = 0) in slope-intercept form, we should first isolate the y variable.
14x - 11y + 16 = 0
-11y = -14x - 16
Now, divide both sides by -11 to solve for y:
y = \frac{14}{11}x + \frac{16}{11}
02
Identify the slope
Now that we have the equation in slope-intercept form (y = \frac{14}{11}x + \frac{16}{11}), we can identify the slope. The slope is the number in front of the x variable (m).
In this case, it is \(\displaystyle\frac{14}{11}\).
Answer: J. \(\displaystyle\frac{14}{11}\).
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Key Concepts
These are the key concepts you need to understand to accurately answer the question.
Slope-intercept form
In algebra, one of the most fundamental concepts to tackle is the slope-intercept form of a linear equation. This form is expressed as \(y = mx + b\), where \(m\) represents the slope of the line and \(b\) indicates the y-intercept – the point where the line crosses the y-axis.
To understand the slope-intercept form, let's consider what each part represents. The slope \(m\) is a measure of the steepness or incline of the line. A positive slope means the line rises as it moves from left to right, while a negative slope indicates the line falls. If the slope is zero, the line is horizontal, depicting a constant value for \(y\) regardless of \(x\). The y-intercept \(b\), on the other hand, provides a starting point for the line on the graph.
When given an equation not already in slope-intercept form, like \(14x - 11y + 16 = 0\), reorganizing it to fit the slope-intercept structure is crucial. Here, by isolating \(y\) on one side, we can easily identify the slope, making this form especially useful for quickly graphing the equation or comparing the slopes of different lines.
To understand the slope-intercept form, let's consider what each part represents. The slope \(m\) is a measure of the steepness or incline of the line. A positive slope means the line rises as it moves from left to right, while a negative slope indicates the line falls. If the slope is zero, the line is horizontal, depicting a constant value for \(y\) regardless of \(x\). The y-intercept \(b\), on the other hand, provides a starting point for the line on the graph.
When given an equation not already in slope-intercept form, like \(14x - 11y + 16 = 0\), reorganizing it to fit the slope-intercept structure is crucial. Here, by isolating \(y\) on one side, we can easily identify the slope, making this form especially useful for quickly graphing the equation or comparing the slopes of different lines.
Exercise Improvement Advice
When learning or teaching this topic, to make it more digestible, remember to stress the importance of rearranging equations to solve for \(y\). This lays the groundwork for understanding how to extract the value of the slope and plot the graph accordingly.Linear Equations
Linear equations form the backbone of algebra and are equations of the first degree, meaning that the highest power of the variable is 1. These types of equations graph as straight lines on a two-dimensional plane. The equation \(14x - 11y + 16 = 0\) is an example of a linear equation involving two variables, \(x\) and \(y\).
To effectively manage linear equations, understanding how to manipulate them algebraically is fundamental. The goal is to express the equation in a way that highlights the relationship between variables. This usually involves simplifying the equation or rearranging it to a form we're familiar with, like the slope-intercept form.
Linear equations are not always presented in a convenient way, so reformulating them to identify the slope and y-intercept is a key skill in algebra.
To effectively manage linear equations, understanding how to manipulate them algebraically is fundamental. The goal is to express the equation in a way that highlights the relationship between variables. This usually involves simplifying the equation or rearranging it to a form we're familiar with, like the slope-intercept form.
Linear equations are not always presented in a convenient way, so reformulating them to identify the slope and y-intercept is a key skill in algebra.
Practice Tip
When handling linear equations, ensure consistent practice in rearranging terms and carefully performing operations to maintain equation balance. This strengthens comprehension of the linear relationship represented and aids in mastering algebra.Algebra
Algebra, a significant branch of mathematics, deals with symbols and the rules for manipulating these symbols to solve problems. In the context of linear equations and the slope-intercept form, algebra teaches us how to find unknown values and understand their relationships. It encompasses everything from simple operations to solving equations and graphing lines.
Algebra requires a logical approach to isolate and solve for variables. In our example, algebraic manipulation — specifically, subtraction and division — was used to reconfigure the given equation into a format that allowed for easy identification of the line's slope. Mastery in algebra involves being able to translate real-world problems into mathematical equations that can be analyzed and solved.
Indeed, proficiency in algebra paves the way for further studies in mathematics, as it is the foundation upon which more advanced topics are built. For students seeking to solidify their understanding, it's beneficial to frequently revisit core concepts, like solving for a variable, to reinforce a strong algebraic foundation.
Algebra requires a logical approach to isolate and solve for variables. In our example, algebraic manipulation — specifically, subtraction and division — was used to reconfigure the given equation into a format that allowed for easy identification of the line's slope. Mastery in algebra involves being able to translate real-world problems into mathematical equations that can be analyzed and solved.
Indeed, proficiency in algebra paves the way for further studies in mathematics, as it is the foundation upon which more advanced topics are built. For students seeking to solidify their understanding, it's beneficial to frequently revisit core concepts, like solving for a variable, to reinforce a strong algebraic foundation.