
repàs rectes i vectors
Authored by Sara Sánchez
Mathematics
9th - 12th Grade
Used 7+ times

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10 questions
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1.
MULTIPLE CHOICE QUESTION
45 sec • 1 pt
Calcula l'ordenada del punt P sabent que
- pertany a la recta: -x - y + 8 = 0
- el valor de l'abscissa és 3: P(3, )
-1
-3
0
5
2.
MULTIPLE CHOICE QUESTION
1 min • 1 pt
Calcula l'equació explícita de la recta següent:
y = -2x - 2
y = -1/2 x -2
y = -1/2 x + 2
y = 1/2x + 2
3.
MULTIPLE CHOICE QUESTION
1 min • 1 pt
Calcula l'equació explícita de la recta següent:
y = 3x + 8
y = -3x + 9
y = 3x - 9
y = 3x + 9
4.
MULTIPLE CHOICE QUESTION
1 min • 1 pt
Quin d'aquests és un vector director de la recta:
4x + 5y - 6 = 0
(-6, 5)
(-5, 4)
(4, -6)
(4, 5)
5.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Completa l'equació de la recta que passa pel punt P(1,1) i té com a vector v = (1,4)
r: (x,y) = ( , ) + k · ( , )
(x,y) = (1 , 1) + k · (1 , -4)
(x,y) = (1 , 4) + k · (1 , 1)
(x,y) = (1 , 1) + k · (1 , 4)
(x,y) = (-1 , 4) + k · (1 , 1)
6.
MULTIPLE CHOICE QUESTION
1 min • 1 pt
6 · (-2,1) + 2 · (3,2) - 6·(1,2) = ( , )
(-12, -2)
(-6, 2)
(2, 6)
(6, 2)
7.
MULTIPLE CHOICE QUESTION
45 sec • 1 pt
Calcula el mòdul del vector v = (3, 0)
Arrel (3)
Arrel (7)
7
3
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