Think you’ve got your head wrapped around Points, Vectors, and Functions? Put your knowledge to
the test. Good luck — the Stickman is counting on you!
Q. Which best completes the following sentence? "A vector is..."
a magnitude.
a quantity with both magnitude and direction.
a line segment with an arrow at one end.
an expression of the form .
Q. ||<3, -1>|| =
2
Q. Find the direction of the vector 
.
. 
Q. Which of the following does NOT represent the vector whose x-component is 3 and whose y-component is 2?
<3, 2>
(3, 2)
3j + 2i
Q. Whether a function is a vector function or scalar function depends on
the input of the function.
the output of the function.
both the input and the output of the function.
the operations involved in computing the function.
Q. Which of the following are scalar functions?
- f(x) = x2
- g(x,y) = x + y
- h(x,y) = ||<
(I) only
(I) and (II)
(II) and (III)
(I), (II), and (III)
Q. Find f(4, 5) where the function f is defined by f(x, y) = <x + y, x – y>
9
-1
<9, -1>
<-1, 9>
Q. Determine which graph is the best representation of the function 
for 0 ≤ t ≤ 4:
for 0 ≤ t ≤ 4:
A
B
C
D
Q. A unit vector is
any scalar multiple of the vector <1, 1>.
any vector of the form <1, y> or <x, 1>.
a vector with integer components.
a vector with magnitude 1.
Q. To normalize the vector 
, it must be multiplied by
, it must be multiplied by 
This vector is already normalized.