hard problem from GMATPrep

This topic has expert replies
Legendary Member
Posts: 1404
Joined: Tue May 20, 2008 6:55 pm
Thanked: 18 times
Followed by:2 members

hard problem from GMATPrep

by tanviet » Tue Jan 26, 2010 4:03 am
Pls, help with this

II I

-------0---------------------->

III IV

Is the line k pass through section II of plane x,y ( I do not know how to draw axis y)

1, slope of k is -1/6

2, y-intercept of k is 6
Source: — Data Sufficiency |

User avatar
Legendary Member
Posts: 1275
Joined: Thu Sep 21, 2006 11:13 pm
Location: Arabian Sea
Thanked: 125 times
Followed by:2 members

by ajith » Tue Jan 26, 2010 4:19 am
duongthang wrote:Pls, help with this

II I

-------0---------------------->

III IV

Is the line k pass through section II of plane x,y ( I do not know how to draw axis y)

1, slope of k is -1/6

2, y-intercept of k is 6

the standard equation of the line y = mx + c [ m = slope, c = y intercept]

here the equation of the line : y = -1/6 x +6

6y+x = 36

The x intercept of this line is (36,0)

and y intercept is (0,6)

From these it is apparent that the line will pass through quadrant 2, the only quadrant it will miss is 3 rd quadrant.
Always borrow money from a pessimist, he doesn't expect to be paid back.