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# Is line y = kx + btangent to circle x^2 + y^2 = 1

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Joined: 31 Jul 2017
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Is line y = kx + btangent to circle x^2 + y^2 = 1 [#permalink]

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05 Feb 2018, 15:00
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Question Stats:

0% (00:00) correct 100% (00:11) wrong based on 4 sessions

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Is line $$y = kx + b$$ tangent to circle $$x^2 + y^2 = 1$$

I. $$k + b = 1$$
II. $$k^2 + b^2 = 1$$
[Reveal] Spoiler: OA

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Intern
Joined: 27 Sep 2017
Posts: 14
Re: Is line y = kx + btangent to circle x^2 + y^2 = 1 [#permalink]

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05 Feb 2018, 15:18
Hello Rahul singh... Are you from whatsapp target 800group?

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Intern
Joined: 27 Sep 2017
Posts: 14
Re: Is line y = kx + btangent to circle x^2 + y^2 = 1 [#permalink]

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05 Feb 2018, 15:18
I have seen that question there 4 hours ago and solved . E?

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Math Expert
Joined: 02 Sep 2009
Posts: 44285
Re: Is line y = kx + btangent to circle x^2 + y^2 = 1 [#permalink]

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05 Feb 2018, 20:26
1
KUDOS
Expert's post
rahul16singh28 wrote:
Is line $$y = kx + b$$ tangent to circle $$x^2 + y^2 = 1$$

I. $$k + b = 1$$
II. $$k^2 + b^2 = 1$$

Discussed here: https://gmatclub.com/forum/is-line-y-kx ... l#p1094193
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Re: Is line y = kx + btangent to circle x^2 + y^2 = 1   [#permalink] 05 Feb 2018, 20:26
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