1.
(04.01)
Which of the following best defines an input? (4 points)
An input is the result of a relation or the function rule, usually the y-values in a set of ordered pairs or on a table or graph.
An input is a special type of relation for which there is a rule that pairs each input with exactly one output.
An input is a set of ordered pairs in which no y-value repeats.
An input is the value that determines another based on the relation or the function rule, usually the x-values in a set of ordered pairs or on a table or graph.
2.
(04.01)
Which point could be removed in order to make the relation a function? (4 points)
{(−4, 3), (−5, 6), (1, 0), (−4, 5), (9, 5), (0, −7)}
(−5, 6)
(1, 0)
(−4, 5)
(9, 5)
3.
(04.01)
The graph of a function is shown:
scatterplot of the following points: negative 2 and 5, negative 1 and 1, 2 and negative 2, and 5 and 2
Which of the following correctly identifies the set of outputs? (4 points)
{(5, −2), (1, −1), (−2, 2), (2, 5)}
{(−2, 5), (−1, 1), (2, −2), (5, 2)}
{−2, −1, 2, 5}
{−2, 1, 2, 5}
4.
(04.01)
Given the relation y = 3x2 + 1, if the input is 4, what is the output? (4 points)
13
48
49
145
5.
(04.01)
Consider the following scenario describing the Cambridge Mall parking lot: The number of wheels in the parking lot is based on the number of cars in the parking lot.
Does this scenario represent a function? (4 points)
Yes, because the number of cars is specific to the number of wheels in the parking lot
Yes, because the number of wheels is specific to the number of cars in the parking lot
No, because the number of wheels is specific to the number of cars in the parking lot
No, because the number of cars is specific to the number of wheels in the parking lot
1. An input is the value that determines another based on the relation or the function rule, usually the x-values in a set of ordered pairs or on a table or graph.
2. (−5, 6)
3. {(−2, 5), (−1, 1), (2, −2), (5, 2)}
4. 49
5. Yes, because the number of cars is specific to the number of wheels in the parking lot.