9000123101 | math4u.vsb.cz

SubArea:

Level:

Project ID:

9000123101

Source Problem:

Accepted:

1

Clonable:

1

Easy:

0

Find the values of the real parameter

q

which ensure that the line

y = q

is a tangent to the circle

x^{2} + y^{2} + 4 x - 8 y + 4 = 0.

{0; 8}

{- 6; 2}

{- 8; 0}

{- 2; 6}