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GmatPrep?? (Slope)

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GmatPrep?? (Slope)

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dferm wrote:
Please Help...
for ax+by+c=0

slope = -a/b

Statement I & II are clearly insufficient when taken alone.

Combining I & II

x intercept = 2
y intercept = 3

slope = -2/3

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Junior | Next Rank: 30 Posts Default Avatar
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parallel_chase wrote:
dferm wrote:
Please Help...
for ax+by+c=0

slope = -a/b

Statement I & II are clearly insufficient when taken alone.

Combining I & II

x intercept = 2
y intercept = 3

slope = -2/3
Although the answer is correct but explanation is flawed.

Stm1. the x-intercept of line K is 2 means it passes through (2,0)
Stm2. the y-intercept of line K is 3 means it passes through (0,3)

Slope of a line = (y2-y1)/(x2-x1)= -3/2 in this case.

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aspire750 wrote:
parallel_chase wrote:
dferm wrote:
Please Help...
for ax+by+c=0

slope = -a/b

Statement I & II are clearly insufficient when taken alone.

Combining I & II

x intercept = 2
y intercept = 3

slope = -2/3
Although the answer is correct but explanation is flawed.

Stm1. the x-intercept of line K is 2 means it passes through (2,0)
Stm2. the y-intercept of line K is 3 means it passes through (0,3)

Slope of a line = (y2-y1)/(x2-x1)= -3/2 in this case.
the slope is -3/2

X/a+Y/b =1
X/2+ Y/3 = 1
3x+2y=6

slope -a/b

-3/2.

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