Intermediate Algebra for College Students (7th Edition)

Published by Pearson
ISBN 10: 0-13417-894-7
ISBN 13: 978-0-13417-894-3

Chapter 2 - Test - Page 175: 26

Answer

Point-slope form $y−3=2(x+2)$. Slope-intercept form $y=2x+7$.

Work Step by Step

If the line passes through a point $(x_1,y_1)$ and slope is m then point-slope form of the perpendicular line is. $\Rightarrow y−y_1=m(x−x_1)$ From the question we have $\Rightarrow (x_1,y_1)=(−2,3)$ Equation of the perpendicular line. $\Rightarrow y=-\frac{1}{2}x-4$ It is in the form of slope-intercept form $y=mx+c$. The slope of the equation is $m=-\frac{1}{2}$ The slope of the two perpendicular lines are negative reciprocals to each other. The slope of the required line is $\Rightarrow m=\frac{1}{−\frac{1}{2}}$ $\Rightarrow m=2$ Substitute all values into the point-slope equation. $\Rightarrow y−(3)=(2)(x−(−2))$ Simplify. $\Rightarrow y−3=2(x+2)$ The above equation is the point-slope form. Now isolate y $\Rightarrow y−3=2(x+2)$ Use distributive property. $\Rightarrow y−3=2x+4$ Add 3 to both sides. $\Rightarrow y−3+3=2x+4+3$ Simplify. $\Rightarrow y=2x+7$ The above equation is the slope-intercept form.
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.