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Hidden Variables
Test Description: This game helps the user understand the effect a changing variable has on another variable.
Instructions: Answer all questions to get your test result.
1) y+(-2x)+8. How does the change in x affect y?
A
As x decreases by 2 y increases by 1.
B
Each time x increases by 1, y decreases by 2.
C
As x increases by 2 y decreases by 1.
D
Each time x decreases by 1, y increases by 2.
2) y=5x-3. How does the change in x affect y?
A
As x increases by 2, y increases by 5.
B
Every time x increases by 1, y multiplied by 2.
C
As x increases by 1, y decreases by 12.
D
As x increases by 1, y increases by 5.
3) x=3 y=8. If y increases by 9 each time x increases by 1. x-3 y-8. x=4 y=?
A
y equals 8.
B
The missing value is 9.
C
The missing number is 16.
D
The missing y-value is 17.
4) Which statement correctly describes the linear function, y=10x + 5?
A
As x increases by 1, y increases by 5.
B
As x increases by 1, y decreases by 5.
C
As x increases by 1, y increases by 10.
D
As x increases by 1, y decreases by 10.
5) Which statement correctly describes the linear function, y= -x+3?
A
As x increases by 1, y decreases by 1.
B
As x increases by 1, y increases by 1.
C
As x increases by 1, y decreases by 3.
D
As x increases by 1, y increases by 3.
6) as x increase by 2 and y increses by 3. what will be y after x increses by 10
A
15
B
6
C
12
D
14
7) what is y in the problem 5x-2y=20 if x=2?
A
20
B
10
C
0
D
5
8) if x=4 and y=10 then what is 2x+6y?
A
57
B
67
C
68
D
88
9) y=2x+5 ,what correctly describes the linear equation?
A
as x incresaes by 2, y increases by 4
B
as x decreases by 2, y increases by 4
C
as x increases by 4, y increases by 2
D
as x decreases by 2, y decreases by 5
10) if x increases by 10 , y increases by 2. what is y if x is 100?
A
30
B
15
C
10
D
20
*select an answer for all questions
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