nitishmahajan wrote:

bigoyal wrote:

Circle C and Line k lie in the xy-plane. If circle C is centered at the origin and has radius 1, does line k intersect circle C ?

(1) The x-intercept of line k is greater than 1.

(2) The slope of line k is -1/10.

Source: GMATPrep

IMO it should be E

1. It only tells us that X intercept is greater than 1 which means the line might and might not intersect the circle ( as shown in figure) Hence insuff.

2. This is also insuff as it only tells us that line is slanting downwards from left to right ( as slope is -ve) but doesn't tell anything else.

Even we combine 1 and 2, they are still insuff because we cant the equation of the line, we only know that x= -c/m or 10c.

I hope this helps !

cheers

One more point to add we would know the y intercept, we could have calculated whether the line intersects the circle.

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