In the figure, the straight lines L:ax+ and L,:y = x+c intersect at the point A on the x-axis. Which of the following is/are true? I. a > 0 y II. b<0 L2:y = x + c III. ac = -1 A

Elementary Geometry For College Students, 7e
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ISBN:9781337614085
Author:Alexander, Daniel C.; Koeberlein, Geralyn M.
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Chapter10: Analytic Geometry
Section10.CT: Test
Problem 22CT
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In the figure, the straight lines L:ax+by = 1
and L,:y = x+c intersect at the point A on the
x-axis. Which of the following is/are true?
12.
I.
a >0
y
II.
b<0
L2:y = x+ c
III. ac = -1
А.
II only
В.
I and III only
С.
II and III only
4: ax + by = 1
D.
I, II and III
Transcribed Image Text:In the figure, the straight lines L:ax+by = 1 and L,:y = x+c intersect at the point A on the x-axis. Which of the following is/are true? 12. I. a >0 y II. b<0 L2:y = x+ c III. ac = -1 А. II only В. I and III only С. II and III only 4: ax + by = 1 D. I, II and III
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