y = −2x −1
x 0 −1
−−−−−−−−−−−−−−−−−−−−−
y −1 1
y = −0,5x + 3,5
x 1 −1
−−−−−−−−−−−
y 3 4
y =1 y = −0,5x + 3,5
−2,5 = − 0,5x
5 = x
B(5,1)
y = −0,5x + 3,5 y = −2x −1
−2x − 1 = −0,5x + 3,5
−1,5x = 4,5
x = −3
y = 5
C(3,−7)
A(−1,1)
AB = 6
h = 4
| AB * h | 6*4 | |||
P = | = | = 12 | ||
| 2 | 2 |
podstaw y=1 do y=−2x−1 →x=−1 B=(−1; 1) do y=−0,5x+3,5 →x=5 C=(5; 1)
y=−2x−1 do y=−0,5x+3,5 → x=−3 y = 5 A=( −3; 5)
| 1 | ||
|BC| = 6 h =4 PΔ= | |BC| h = 12 | |
| 2 |