/*! 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 36 Write each equation in slope-int... [FREE SOLUTION] | 91Ó°ÊÓ

91Ó°ÊÓ

Write each equation in slope-intercept form and identify the slope and y-intercept of the line. $$2 x-2 y=1$$

Short Answer

Expert verified
The slope is 1 and the y-intercept is -\frac{1}{2}.

Step by step solution

01

- Write the Equation

Start with the given equation: \[ 2x - 2y = 1 \]
02

- Rearrange to Isolate y

To write the equation in slope-intercept form, the goal is to isolate y. First, subtract 2x from both sides: \[ -2y = -2x + 1 \]
03

- Divide by the Coefficient of y

Divide every term by -2 to solve for y: \[ y = x - \frac{1}{2} \] Now, the equation is in slope-intercept form \( y = mx + b \), where \( m \) is the slope and \( b \) is the y-intercept.
04

- Identify the Slope and y-Intercept

From the slope-intercept form of the equation \( y = x - \frac{1}{2} \), identify the slope (\( m \)) and the y-intercept (\( b \)): \( m = 1 \) \( b = -\frac{1}{2} \)

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Key Concepts

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

Linear Equations
A linear equation is a fundamental concept in algebra. It represents a straight line on a graph. A typical linear equation looks like this:
  • ax + by = cHosted by a plot, this equation shows how one variable (usually y) depends on another variable (often x).
To make the relationship more explicit, we often rewrite it in a different form called the slope-intercept form.
Slope
Slope measures the steepness of a line. It tells us how much y changes for a unit change in x. In the slope-intercept form of a linear equation, written as y = mx + b, the slope is represented by 'm'.
  • If m is positive, the line slopes upwards.
  • If m is negative, the line slopes downwards.
  • A larger value of m means a steeper slope.
For the provided equation, 2x - 2y = 1, after converting to slope-intercept form, we get y = x - ½, where the slope (m) is 1. This means for every unit increase in x, y increases by 1.
Y-intercept
The y-intercept is the point where the line crosses the y-axis. It's represented by 'b' in the slope-intercept form y = mx + b. When x equals 0, the result for y will be the y-intercept. In our example, the equation y = x - ½ has a y-intercept of -½. This means when x is 0, y will be -½. Understanding the y-intercept helps in quickly sketching the graph of the equation.
Algebra
Algebra is a branch of mathematics dealing with symbols and the rules for manipulating those symbols. It is about finding the values of unknowns. By understanding concepts like linear equations, slopes, and y-intercepts, you can solve for unknowns and graph linear equations effectively. For our example, starting with 2x - 2y = 1, we use algebraic manipulations to bring it to the form y = mx + b, allowing us to easily identify the slope and y-intercept and create a graph. This practice is crucial for mastering algebra and its applications in various mathematical problems.

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