Odpowiedzi

2010-03-21T12:18:57+01:00
A)y=6x+26
5x=7y+3
-6x+y=26/*7
5x-7y=3
-42x+7y=182
5x+7y=3
-37x=185/:-37
x=-5

14 1 14
2010-03-21T12:35:34+01:00
S=(-2,-3),P=(4,-5)
a=-2 b=-3 x=4 y=-5
(x - a)² + (y - b)² = r²
(4 - (-2))² + (-5- (-3))²= r²
6² +(-2)²=r²
r²=36+4=40
wzór
(x +2)² + (y +3)² = 40
22 4 22