
Funcții. Funcția de gradul I.
Quiz
•
Mathematics
•
9th Grade
•
Practice Problem
•
Hard
Alex Costiug
Used 1+ times
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10 questions
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1.
MULTIPLE CHOICE QUESTION
30 sec • 10 pts
Următoarele seturi de perechi ordonate reprezintă relații de la mulțimea X la mulțimea Y.
Care este o funcție?
{(4, 2), (9, 3), (16, 4), (25, 5)}
{(4, 2), (9, 4.5), (16, 8), (16, -8)}
{(4, 2), (9, 12), (9, 15), (16, 26)}
{(4, 2), (4, -2), (16, 4), (16, -4)}
2.
MULTIPLE CHOICE QUESTION
30 sec • 10 pts
X = {-4, -3, -2, -1, 0, 1, 2, 3, 4}
f este o funcție de la X la mulțimea numerelor întregi așa cum este definită în tabelul următor.
Care este imaginea lui f?
{-4, -3, -2, -1, 0, 1, 2, 3, 4}
ℕ
ℤ
{-1, 1, 7, 17, 31}
3.
MULTIPLE CHOICE QUESTION
30 sec • 10 pts
Fie funcția 𝑓: ℝ → ℝ dată prin f(x) = -5x + 2. Care dintre urmăroarele puncte aparțin graficului funcției f?
A(0,4)
B(0,2)
C(-9, 11)
D(2, 10)
4.
MULTIPLE CHOICE QUESTION
30 sec • 10 pts
Fie funcția 𝑔: ℝ → ℝ dată prin g(x) = 3x - 5. Care dintre următoarele puncte NU aparțin graficului funcției g?
A(0,2)
B(1,0)
C(-2, -11)
D(3, 4)
5.
MULTIPLE CHOICE QUESTION
10 sec • 10 pts
Fie funcția 𝑓: ℝ → ℝ dată prin f(x) = 2x + 1. Funcția f este definită:
sintetic
analitic
6.
MULTIPLE CHOICE QUESTION
1 min • 10 pts
Construiți un tabel cu valorile lui x și y care să satisfacă 3x + 4y = 12 și desenați graficul acestuia prin trasarea punctelor.
Care dintre următoarele este corectă?
7.
MULTIPLE CHOICE QUESTION
1 min • 10 pts
Fie dreapta de ecuație d: y = 4x + 3½.
a) Care este panta acestei drepte?
b) Care este punctul de intersecție al dreptei date cu axa Oy?
a) m = 3.5
b) P = (0, 4)
a) m = 4
b) P = (0, 3.5)
a) m = -4
b) P = (0, 3.5)
a) m = 4
b) P = (0, - 3.5)
a) m = 4
b) P = (0, 0)
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