If y varies directly as x, find the direct variation equation for the situation.y = 5 when x = 
A. y = 
x
B. y = x + 
C. y = 
x
D. y = 20x
Answer: D
Mathematics
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Use the vertical line test to determine if the graphs are functions.
A. Yes B. No
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Find the absolute value.|-21|
A. 21 B. 0 C. -21 D. ±21
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Find the distance between the following points:
?
, 
?
A. 3 B. 5 C. 4 D. 2 E. 1
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Solve the problem.Use the graphs of y = - 
x + 5 and y = 
x + 1, that are provided, to solve the equation 
A. 3 B. 5 C. 4 D. 6
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