1. Which equation is a direct variation function?
y = 4
y = 1/3x + 4
y = x
y = x3 ( x3 is supposed to be an exponent)
2. The following table represents a direct variation function.
Input (x) 2 4 6 8 10
Output (y) -3 -5 -6 -7 -8
True
False
3. What is the constant of proportionality in the direct variation represented on the following graph?
1/4
-1/4
4
-4
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