SOLUTION: How can I tell whether -4x + 2y = -2 represents a direct variation?

Question 556991: How can I tell whether -4x + 2y = -2 represents a direct variation?
Answer by stanbon(75887) (Show Source): You can put this solution on YOUR website!
How can I tell whether -4x + 2y = -2 represents a direct variation?
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2y = 4x - 2
y = 2x -1
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As x increases, y increases.
x and y are directly related.
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Note: Every linear function expresses a direct variation.
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Cheers,
Stan H.
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