Intermediate Algebra: Connecting Concepts through Application

Published by Brooks Cole
ISBN 10: 0-53449-636-9
ISBN 13: 978-0-53449-636-4

Chapter 1-4 - Cumulative Review - Page 408: 21

Answer

$y = -0.4x + 8.8$

Work Step by Step

The equation of the line given is in standard form, which is given by the formula $Ax + By = C$, where $A$, $B$, and $C$ are real numbers. We will need to rewrite this equation in slope-intercept form to find its slope. The slope-intercept form is given by the formula $y = mx + b$, where $m$ is the slope and $b$ is the y-intercept. Let's rewrite the equation given so that $y$ is isolated on the left side of the equation. Subtract $2x$ from both sides of the equation: $5y = -2x + 11$ Divide both sides of the equation by $5$ to isolate $y$: $y = -\frac{2}{5}x + \frac{11}{5}$ Therefore, the slope of the given equation is $-\frac{2}{5}$. This is also the slope of the equation we are trying to find. Let's plug in the slope and the point given into the point-slope form of the equation, which is given by the formula: $y - y_1 = m(x - x_1)$, where $(x_1, y_1)$ is a point on the line and $m$ is the slope of the line. Let's plug in the points into the formula: $y - 10 = -\frac{2}{5}(x - (-3))$ Simplify: $y - 10 = -\frac{2}{5}(x + 3)$ We are asked to write the equation in slope-intercept form, which is given by the following formula: $y = mx + b$, where $m$ is the slope and $b$ is the y-intercept. Use the distributive property: $y - 10 = -\frac{2}{5}x - \frac{6}{5}$ Let's rewrite the equation using decimals instead of fractions: $y - 10 = -0.4x - 1.2$ Isolate $y$ by adding $10$ to both sides of the equation: $y = -0.4x + 8.8$
Update this answer!

You can help us out by revising, improving and updating this answer.

Update this answer

After you claim an answer you’ll have 24 hours to send in a draft. An editor will review the submission and either publish your submission or provide feedback.