This question looks ambiguous.ice_rush wrote:In the xy-plane, is the slope of line k equal to 0?
(1) The x intercept of k is 0
(2) The y intercept of k is 0
OA after discussion as I am highly suspicious of the answer.
You are right, I have edited my previous reply.ice_rush wrote:Hi Anju,
My understanding of St1 is that there is only one point of intersection with the x axis. If that is true we can rule out y=0 which makes st 1 sufficient. What am I missing here?
Thanks!
the answer has to be EThanks! However, as per GMATPrep the answer is E
this is not correctAnju@Gurome wrote :The x-intercept of k is 0 implies that there is only one point of intercept with the x-axis, which means that we can rule out the line y = 0 {On x-axis, y = 0, and on y-axis, x = 0, which means both pass through the origin. But x-axis has a slope of 0}. So, line k is not the line y = 0 and has x-intercept, which means it cannot be horizontal. So, the slope is not 0; SUFFICIENT.
this is not correct .oki do one thing .draw a line Y = 2 and ask ur self what is the slope of this line it is zero !!.not ask ur self does this line have a x intercept .the answer is no !!so c/m is zero.
hence m definitely not equal to zero, hence statement 1 is sufficient to answer the question.
also ur this analysis is not correct . i cud have explained mathematically but i thought of giving u example as i have done in my previous post !!x = y/m - c/m is the equation of line in the form of x.
now statement 1 says x intercept is zero.
so c/m is zero.
hence m definitely not equal to zero, hence statement 1 is sufficient to answer the question.
dude you have a flaw in your reasoning.aditya8062 wrote:this is not correct .oki do one thing .draw a line Y = 2 and ask ur self what is the slope of this line it is zero !!.not ask ur self does this line have a x intercept .the answer is no !!so c/m is zero.
hence m definitely not equal to zero, hence statement 1 is sufficient to answer the question.
so that means that this line y = 2 has slope 0 and also the x intercept is 0
now draw the line Y = X again ask 2 question .what is the x intercept of this line .it is 0
is the slope 0 ? no
hence A cannot be the answer !!!
make sense !!
so is there a rule that if if my equation has to follow st 1 then it cannot follow any other condition !!statement 1 says x intercept is zero but you keep on making y intercept zero.
there is no rule that says that, but whatever condition you are bringing in should not contradict with the given statement, right.Because if that is the case then your assumption is wrong. This method is known as negation method and is widely used too.aditya8062 wrote:so is there a rule that if if my equation has to follow st 1 then it cannot follow any other condition !!statement 1 says x intercept is zero but you keep on making y intercept zero.
i am not sure if u have followed my equations .kindly do them and justify as why i am getting 2 answers with A
i am not sure which equation of mine u referring !!for statement 1, you made the slope of line zero which in turn make the x intercept equal to infinity or not defined(c/0 = infinity), hence your assumption is wrong.
y = 2 has a slope of zero and intercept of 2.aditya8062 wrote:i am not sure which equation of mine u referring !!for statement 1, you made the slope of line zero which in turn make the x intercept equal to infinity or not defined(c/0 = infinity), hence your assumption is wrong.
BTW u didnt answer what is the slope of y =2 and what is the X intercept of this equation
u want me to put mathematical solution to this ?
