*l*is parallel to line

*k*, does line

*l*intersect the

*x*-axis?

(1) Line

*k*has slope zero.

(2) Point (0, 4) is on line

*k*.

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Answer B

ReplyDeleteanswer C

ReplyDelete(1) y = constant has 0 slope, which is parallel to x axis. l is parallel to x axis. (A) and (D)

ReplyDelete(2) line k intersects with y axis. So, line l intersects with y axis. Nothing abt x-axis.

Answer is A

Answer should be, E.

ReplyDeleteProving that line is parallel to x-axis isn't enough to prove that doesn't intersect x-axis. We need to prove that the line is not co-incident as well.

If two lines are co-incident lines, they intersect each other at all points.

Both (1) & (2) tell us that k is not co-incident with x-axis.

But they don't tell us whether line l is co-incident with x-axis.

Hence, we can't say if l intersects x - axis.

This comment has been removed by the author.

ReplyDeleteEternity is right

ReplyDelete1: k is parallel to X Aaxis

l maybe co-incident with the X axis.

2: Again it doesnt tell us whether l passes through x axis or not.

1 & 2: K is parallel to the x axis and offset by 4 units. It doesnt tell us anything about l

Answer E

Eternity is v right..:)

ReplyDeletev good explanation

This is a tricky question.The game is hidden in words. Still not sure, which option is correct.

ReplyDelete