Calculus: Early Transcendentals 8th Edition

Published by Cengage Learning
ISBN 10: 1285741552
ISBN 13: 978-1-28574-155-0

APPENDIX C - Graphs of Second-Degree Equations - C Exercises - Page A 23: 28

Answer

$x^2-y^2-4x+3 = 0$ $(x-2)^2-y^2 = 1$ This is the equation of a hyperbola, where $a = 1, b=1, h = 2,$ and $k=0$

Work Step by Step

$x^2-y^2-4x+3 = 0$ $x^2-4x-y^2+3 = 0$ $x^2-4x+4-4-y^2+3 = 0$ $(x-2)^2-y^2 = 1$ We can write the general form of a hyperbola: $\frac{(x-h)^2}{a^2}-\frac{(y-k)^2}{b^2} = 1$ The equation in this question is the equation of a hyperbola, where $a = 1, b=1, h = 2,$ and $k=0$ The equations of the asymptotes are $~~y = x-2~~$ and $~~y = -(x-2) = 2-x~~$ Note that these two lines intersect at the point $(2,0)$ The x-intercepts are $~~1~~$ and $~~3$ The y-intercepts are $~~\pm \sqrt{3}$ We can sketch a graph of this hyperbola:
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