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A Review Of What We Have Done So Far!
Test Description: This test is a review of various math concepts we have learned in recent months. Good luck!
Instructions: Answer all questions to get your test result.
1) The slope measures.....
A
The steepness and direction of a line.
B
The change in time compared to change in height.
C
The pattern in the y-column of a table.
D
Where a linear function starts on a graph.
2) To calculate the slope you would find...
A
the change in x values divided by the change in y values.
B
what you would multiply to each x to get each y.
C
the change in y values divided by the change in x values.
D
what you add to each x to get each y.
3) In the function rule y = 4x - 6, what does the slope tell me to do?
A
Go up 4 spaces, over 1 space right.
B
Go up 1 space, over 4 spaces right.
C
Go down 6 spaces, over 1 space right.
D
Go down one space, over 6 spaces right.
4) y = 0.99x - 2, where x is the number of MP3 files purchased and y is the final cost of your purchase. What does the slope tell you about the problem?
A
You spend $0.99 on MP3's.
B
You only get 0.99 of an MP3 each time.
C
You spend $0.99 more for every 1 MP3 you buy.
D
You have to buy more than 2 MP3's.
5) y = 0.99x - 2, where x is the number of MP3 files purchased and y is the final cost of your purchase. Which of these is NOT a possible meaning for the y-intercept?
A
Your online account had a $2 credit in it, so you will get to take off that $2 from today's purchase.
B
You start at -2 MP3's.
C
The website is giving new customers a $2 savings on your first purchase for setting up an account.
D
You have an online coupon code that will give you $2 your total purchase.
6) Which of these function rules is a direct variation?
A
y = x + 5
B
y = 2x - 7
C
y = 18 / x
D
y = -3x
7) What does an r-value of -0.9954 mean about the data set?
A
You have a very strong negative correlation.
B
You have a very strong positive correlation.
C
Being a negative number means the trend line is a bad fit for the data.
D
Correlation is so strong that you can also assume causation.
8) Which of the following sets of numbers could be the dimensions of a right triangle?
A
a = 2, b = 3, c = 5
B
a = 12, b = 16, c = 20
C
a = 2, b = 4, c = 6
D
a = 10, b = 13, c = 38
9) In a right triangle, the base = 8cm and the height = 10 cm. What is the value of the hypotenuse?
A
6 cm
B
13 cm
C
about 12.81 cm
D
about 12.80 cm
10) In a right triangle, the hypotenuse has a value of 30 inches and the base has a value of 7 inches. How tall is the triangle?
A
about 30.80 inches tall
B
about 30.81 inches tall
C
about 29.1 inches tall
D
about 29.2 inches tall
11) Two lines cross each other, creating 4 angles. One of the angles measures 28 degrees. What do the other 3 angles measure?
A
28 degrees, 152 degrees, 152 degrees
B
28 degrees, 28 degrees, 152 degrees
C
28 degrees, 28 degrees, 62 degrees
D
28 degrees, 62 degrees, 62 degrees
12) In a triangle, one interior angle measures 15 degrees and another measures 47 degrees. What is the measure of the third angle?
A
128 degrees
B
180 degrees
C
118 degrees
D
28 degrees
13) Which of the following is NOT true about rate of change?
A
Rate of change measures change in y over change in x.
B
Rate of change does not mean the same thing as slope, because R.o.C. is done on a table and slope is done on a graph.
C
Rate of change tells us how steep the line will be.
D
A constant rate of change always goes with a linear function.
14) solve this system. x + y = 3 2x - y = 9
A
x = 1, y = 3
B
x = -1, y = 4
C
x = 4, y = -1
D
x = 4.5, y = -1.5
15) 5x - 8 = 7
A
x = 9
B
x = 2
C
x = 3
D
x = -3
16) -2(4x - 5) + 6x - 4 = -5(x + 7)
A
x = -26/3
B
x = -41/3
C
x = 49/9
D
x = 16/3
17) If -x is greater than 5, then
A
x is less than 5
B
x is less than -5
C
x is greater than -5
D
x is greater than 5
18) Candy canes cost $1.50 each to buy, and chocolate moose munch bags cost $3.50 each. You have no more than $10 to spend. Which of these is NOT a possible solution?
A
2 candy canes, 2 bags of moose munch.
B
6 candy canes, 4 bags of moose munch
C
8 candy canes, 2 bags of moose munch
D
3 candy canes, 1 bag of moose munch
19) Two angles are complementary. One of the angles is 40 degrees. What is the other angle?
A
140 degrees
B
50 degrees
C
40 degrees
D
320 degrees
20) Two angles are supplementary. One of the angles is 57 degrees. What is the other angle?
A
303 degrees
B
123 degrees
C
57 degrees
D
33 degrees
*select an answer for all questions
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