Is line \(y = kx + b\) tangent to circle \(x^2 + y^2 = 1 ?\)

This topic has expert replies
Legendary Member
Posts: 2276
Joined: Sat Oct 14, 2017 6:10 am
Followed by:3 members

Timer

00:00

Your Answer

A

B

C

D

E

Global Stats

Is line \(y = kx + b\) tangent to circle \(x^2 + y^2 = 1 ?\)

(1) \(k + b = 1\)
(2) \(k^2 + b^2 = 1\)

Answer: E

Source: GMAT Club Tests