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kiran120680
Moderator - Masters Forum
Joined: 18 Feb 2019
Last visit: 27 Jul 2022
Posts: 706
Given Kudos: 276
Location: India
Schools: AGSM '20 EDHEC Sept 2019 Intake Great Lakes '21 IE
GMAT 1: 460 Q42 V13
GPA: 3.6
08 Mar 2019, 08:56
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C
Be sure to select an answer first to save it in the Error Log before revealing the correct answer (OA)!
Difficulty:
65%
(hard)
Question Stats:
54% (01:50) correct
46%
(01:45)
wrong
based on 179
sessions
History
Date
Time
Result
Not Attempted Yet
Does the curve f(x)=y=ax^2+c intersect with the x - axis?
I. f(4) > 0
II. a < 0
I. f(4) > 0
II. a < 0
09 Mar 2019, 08:14
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I. f(4) > 0
It means a part of the curve is above the x axis at x = 4. But, No info whether
a) the curve is above the x axis
or
b) intersect it in more points.
So, NOT SUFFICIENT.
II. a < 0
It means the parabola, extends downwards but 2 cases are possible.
a) it can intersects
or
b) does not intersect the x axis.
So, NOT SUFFICIENT.
Combing Statement 1 & 2, We get a part of the curve is above the x axis and it extends downwards.
So, It must intersects the x axis.
Hence SUFFICIENT
So, Answer is C
II. a < 0
1F.jpg [ 12.56 KiB | Viewed 7250 times ]
2F.jpg [ 14.36 KiB | Viewed 7222 times ]
2A.jpg [ 10.34 KiB | Viewed 7263 times ]
1A.jpg [ 10.42 KiB | Viewed 7225 times ]
It means a part of the curve is above the x axis at x = 4. But, No info whether
a) the curve is above the x axis
or
b) intersect it in more points.
So, NOT SUFFICIENT.
II. a < 0
It means the parabola, extends downwards but 2 cases are possible.
a) it can intersects
or
b) does not intersect the x axis.
So, NOT SUFFICIENT.
Combing Statement 1 & 2, We get a part of the curve is above the x axis and it extends downwards.
So, It must intersects the x axis.
Hence SUFFICIENT
So, Answer is C
II. a < 0
kiran120680
Attachment:
1F.jpg [ 12.56 KiB | Viewed 7250 times ]
Attachment:
2F.jpg [ 14.36 KiB | Viewed 7222 times ]
Attachment:
2A.jpg [ 10.34 KiB | Viewed 7263 times ]
Attachment:
1A.jpg [ 10.42 KiB | Viewed 7225 times ]
General Discussion
eabhgoy
Joined: 12 Apr 2011
Last visit: 14 Jan 2021
Posts: 112
Own Kudos:
Given Kudos: 85
Location: United Arab Emirates
Concentration: Strategy, Marketing
Schools: CBS '21 Yale '21 INSEAD Jan'21 Intake IMD '21 (A)
GMAT 1: 670 Q50 V31
GMAT 2: 720 Q50 V37
GPA: 3.2
WE:Marketing (Telecommunications)
Schools: CBS '21 Yale '21 INSEAD Jan'21 Intake IMD '21 (A)
GMAT 2: 720 Q50 V37
Posts: 112
Kudos:
293
09 Mar 2019, 07:53
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kiran120680
Could anyone help with the solution?
Thanks in advance.
