Test Parabola

Test Parabola

10th Grade

18 Qs

quiz-placeholder

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Test Parabola

Test Parabola

Assessment

Quiz

Mathematics

10th Grade

Practice Problem

Hard

Created by

IVELINA BOBTCHEVA

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18 questions

Show all answers

1.

MULTIPLE CHOICE QUESTION

1 min • 1 pt

Media Image

Il grafico di quale delle seguenti funzioni è rappresentato in figura?

y=2x24x+1y=-2x^2-4x+1

y=2x2+4x+1y=-2x^2+4x+1

y=x2+2x+1y=-x^2+2x+1

y=2x24x+1y=2x^2-4x+1

2.

MULTIPLE CHOICE QUESTION

2 mins • 1 pt

Per quale valore di k l'ascissa del vertice della parabola y=k x22(k1)x+2y=k\ x^2-2\left(k-1\right)x+2   è uguale a 3 ?

 12-\frac{1}{2}  

 2-2  

 32\frac{3}{2}  

4

3.

MULTIPLE CHOICE QUESTION

2 mins • 1 pt

Per quali valori di  aa   la parabola di equazione y=(2aa2) x2+a x5y=\left(2a-a^2\right)\ x^2+a\ x-5   ha la concavità verso l'alto?

 a<0  a>2a<0\ \vee\ a>2  

 0<a<20<a<2  

 a<2a<2  

 a>0a>0  

4.

MULTIPLE CHOICE QUESTION

2 mins • 1 pt

Per quali valori di k la retta di equazione  y=k xy=k\ x   è tangente alla parabola di equazione y=x24x+1y=x^2-4x+1   

 k=0  k=6k=0\ \vee\ k=-6  

 k=2  k=2k=2\ \vee\ k=-2  

 k=2  k=6k=2\ \vee\ k=6  

 k=2  k=6k=-2\ \vee\ k=-6  

5.

MULTIPLE CHOICE QUESTION

1 min • 1 pt

L'equazione della retta tangente alla parabola di equazione y=12x2+4 x6y=-\frac{1}{2}x^2+4\ x-6  nel punto di intersezione con l'asse y è

y=-4x-6

y=4x-6

y=-2x-6

y=-4x-4

6.

MULTIPLE CHOICE QUESTION

1 min • 1 pt

La parabola che ha asse di simmetria y=2 e passa per passa per i punti  A(3;0)A\left(3;0\right)  e  B(0;1)B\left(0;1\right)  è

 x=y24x3x=y^2-4x-3  

 y=x24x+1y=x^2-4x+1  

 x=y22y+3x=y^2-2y+3  

 x=y24y+3x=y^2-4y+3  

7.

MULTIPLE CHOICE QUESTION

3 mins • 1 pt

Media Image

La funzione che ha per grafico quello riportato in figura è

y=2 x2+xy=-2\ x^2+\left|x\right|

y=2x2xy=-2x^2-\left|x\right|

y=2xx+xy=-2x\left|x\right|+x

y=2x2xy=-2\left|x\right|^2-x

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