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29.09.2020 •
Mathematics
Uestion 4(Multiple Choice Worth 5 points)
(4.04 LC)
Which equation represents a linear function?
Equation 1: y3 = 2x + 1
Equation 2: y = 3x + 1
Equation 3: y = 5x2 − 1
Equation 4: y = 4x4 − 1
Equation 1
Equation 2
Equation 3
Equation 4
Question 5(Multiple Choice Worth 5 points)
(04.02 LC)
Peter and Jacob are members of different video game libraries. Peter pays a membership fee of $45, and he pays $6 for every video game he rents. The following function shows the total amount of money, y, in dollars, that Jacob pays for renting x number of video games. y = 5x + 25
How many more dollars does Peter pay for a membership fee than Jacob?
$11
$20
$25
$45
Question 6(Multiple Choice Worth 5 points)
(04.01 MC)
If y = 5x − 3, which of the following sets represents possible inputs and outputs of the function, represented as ordered pairs?
{(2, 5), (−3, −12), (−4, −18)}
{(−1, −8), (0, −3), (3, 12)}
{(1, 4), (7, 25), (3, 10)}
{(5, 20), (6, 12), (1, 9)}
Question 7(Multiple Choice Worth 5 points)
(4.02 MC)
Galvin and Henry spend a certain amount of money from their money box each month to buy plants. The table shows the relationship between the amount of money (y) remaining in Galvin's money box and the number of months (x):
Number of Months
(x)
Amount Remaining (dollars)
(y)
1
80
2
75
3
70
4
65
The equation shows the relationship between the amount of money, y, remaining in Henry's money box and the number of months, x:
Function 2:
y = −7x + 80
Which statement explains which function shows a greater rate of change?
Function 2 shows a greater rate of change, because Henry spends $7 each month and Galvin spends $5 each month.
Function 2 shows a greater rate of change, because Henry spends $80 each month and Galvin spends $15 each month.
Function 1 shows a greater rate of change, because Galvin spends $15 each month and Henry spends $73 each month.
Function 1 shows a greater rate of change, because Galvin spends $5 each month and Henry spends –$7 each month.
Question 8(Multiple Choice Worth 5 points)
(4.05 LC)
The graph shows y as a function of x:
Graph of x against y shows 4 segments. Segment A is a horizontal line parallel to the x-axis. Segment B is a slanting straight line going down. Segment C is a slanting line going up. Segment D is a slanting straight line going down that touches the x-axis.
In which segment is the function constant?
A
B
C
D
Question 9(Multiple Choice Worth 5 points)
(4.05 MC)
The graph shows the distance Kim traveled from the mall in miles (y) as a function of time in seconds (x). The graph is divided into four segments labeled P, Q, R, and S, respectively.
Graph shows 4 segments. Segment P is a slanting straight line going up. Segment Q is a slanting line going up. Segment R is a horizontal straight line parallel to the x-axis. Segment S is a slanting straight line going down that touches the x-axis.
Which segment shows Kim waiting for a cab?
P
Q
R
S
Question 10(Multiple Choice Worth 5 points)
(4.05 LC)
Which of the following options best describes the function graphed below?
A graph shows a straight horizontal line that is parallel to the x-axis and above the x-axis.
Nonlinear increasing
Linear constant
Nonlinear decreasing
Linear increasing
Question 11(Multiple Choice Worth 5 points)
(04.01 LC)
Which of the tables represents a function?
Table A
Input Output
5 3
5 2
4 1
Table B
Input Output
1 2
3 2
5 3
Table C
Input Output
0 0
1 2
1 3
Table D
Input Output
4 2
4 3
4 4
Table A
Table B
Table C
Table D
Question 12(Multiple Choice Worth 5 points)
(4.04 MC)
Which of the following is the graph of a linear function?
A coordinate grid is shown with a slanting straight line segment that starts at a point in the first quadrant, cuts the x-axis and y-axis and ends at the third quadrant.
A coordinate grid is shown with an inverted u-shaped graph that cuts the axis at 2 points and the positive y-axis at 1 point.
A coordinate grid is shown with two slanting straight line segments that meet at a point on positive y-axis.
A coordinate grid is shown with two slanting straight line segments that meet at a point in the second quadrant.
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