AV3- 3ºTRI - AVALIAÇÃO - 4 PONTOS

Quiz
•
Mathematics
•
2nd Grade
•
Medium
ANDERSON DAVIS
Used 6+ times
FREE Resource
20 questions
Show all answers
1.
MULTIPLE CHOICE QUESTION
5 mins • 1 pt
Determine a função por determinante dos pontos ( 1; -2 ) e ( 2; 4 )
y = 6x - 8
y = 6x+8
y = -6x-8
y = 6x - 4
2.
MULTIPLE CHOICE QUESTION
5 mins • 3 pts
Analise o comportamento de Δ da função y = x²-3x+4
Δ > 0, logo ∃ x1 e x2
Δ < 0, logo ∄ x1 e x2
Δ = 0, logo ∃ x1 e x2
Δ > 0, logo ∃ x1 = x2
3.
MULTIPLE CHOICE QUESTION
1 min • 2 pts
Para a função y = ax+b, responda sobre o coef. angular ( a ) e coef. linear ( b )
quando a> 0 a função é decrescente
para b<0 significa que a reta passa entre os quadrantes 3 e 4 do plano cartesiano
quando a< 0 a função é crescente
a função y = ax+b é uma curva no gráfico
4.
MATCH QUESTION
2 mins • 1 pt
Combine o seguinte
y = ax+b
a função é uma reta
a>0 ,b>0
y=2x-3
a>0, b<0
a função é uma parábola
y=ax²+bx+c
y = 2x+3
a,b,c são os coeficientes da parábola
y=ax²+bx+c
5.
MULTIPLE CHOICE QUESTION
2 mins • 2 pts
Sendo as funções f(x) = 3x+5 e g(x) = -5x+3, então f(0)+g(0) =
5
6
7
8
6.
MULTIPLE CHOICE QUESTION
2 mins • 1 pt
Sendo as funções f(x) = 3x+5 e g(x) = -5x+3, então f(0)-g(0) =
2
3
4
5
7.
MULTIPLE CHOICE QUESTION
2 mins • 3 pts
Sendo as funções f(x) = 3x+5 e g(x) = -5x+3, então g(0)-f(0) =
0
-1
-2
-3
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