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mysterious intercepts

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by sanju09 » Thu May 14, 2009 1:32 am
Two lines L1 and L2 meet at point (5, 6), is slope of L1 > slope of L2?

(1) Both lines have negative slopes.

(2) The X-intercept of L1 > X-intercept of L2.


IMO C
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by avenus » Thu May 14, 2009 7:23 am
I'd go for B. Note that there is a discontinuity in the tangent function at pi/2, where it jumps from +inf to -inf to start increasing again so the slope of L1 is always greater than that of L2.
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by sanju09 » Fri May 15, 2009 2:44 am
avenus wrote:I'd go for B. Note that there is a discontinuity in the tangent function at pi/2, where it jumps from +inf to -inf to start increasing again so the slope of L1 is always greater than that of L2.
I'm sorry Mr avenus, but I really didn't get how on earth can we ever compare the slopes of two intersecting lines merely in terms of their x-intercepts. Would you consider corrections please? I don't think that the jump of tangent functions is of any help here. What do you think, Mr avenus?
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