Equation of a line QUIZ

The scalar product of two perpendicular vectors is

• one

• zero

• -1

• 2

Given points are A(3;2) and B(5;-1). What are the coordinates of the AB vector?

• (-2; 3)

• (-2; -3)

• (2; -3)

• (2; 3)

The name of the vector which is perpendicular to a given line is

• direction vector

• distance vector

• normvector

• normal vector

The name of the vector which is parellel with a given line is

• direction vector

• direct vector

• normvector

• normal vector

Which is a formula for the equation of the line with normal vector n(A;B) and a pont P(x₀;y₀) from the line?

• Ax+By=Ax+By

• Ax₀+By₀=Ax+By

• Ax+Ax₀=By+By₀

• x+y=Ax₀+By₀

How long is the AB(6;8) vector?

• 10

• 11

• 12

• 6,21

How much is the scalar product of a(2;4) and b(-1; 3) vectors?

• -10

• 10

• -6

• 5

How long is vector a(2;6)?

• 6,325

• 2,83

• 3

• 4,96

How long is vector b(-8;3)?

• 4

• 10,2

• 6,26

• 8,54

How large is the angle which vectors a(2;6) and b(-8;3) enclose?

• 0,037

• 87,88 degrees

• 60 degrees

• 90