xy coordinate plane question

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Baldini: Senior | Next Rank: 100 Posts; Posts: 90; Joined: Mon Mar 02, 2009 6:06 am; Thanked: 3 times

by Baldini » Fri Mar 06, 2009 4:00 am

In the XY plane, at what two points does the graph of y= (x+a)(x+b) intersect the axis?

(1) a + b = -1
(2) The graph intersects the axis at (0, -6)

OA is C.

Can someone please explain how to do this question?
Thanks

GMAX

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Source: Beat The GMAT — Data Sufficiency | Fri Mar 06, 2009 4:00 am

DanaJ: Site Admin; Posts: 2567; Joined: Thu Jan 01, 2009 10:05 amFollowed by: 550 members; Thanked: 712 times; GMAT Score:770

by DanaJ » Fri Mar 06, 2009 11:40 am

Please try to search key words:

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https://www.beatthegmat.com/ds-question- ... 26593.html

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