1) 2 : 1/2 = 4 (miles/hour)
2) 3 : 4 = 3/4 (hour)
Answer: you will walk 3 miles in 3/4 hour.
From left to right, the line slants upwards like in this image:
A function represents a direct variation if the ratio between the output values and input values is constant. If two quantities vary directly, the points on a graph form a straight line, and the line runs through the origin.
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