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Which graph represents a function with direct variation?

Which graph represents a function with direct variation?-example-1
User Sofie VL
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That means that the graph of a function with direct variation has these features: It is a straight line: because the slope is the ratio y/x = k. It passes through the origin (0,0): because y = kx = k (0) = 0.
User Harish Lalwani
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