<u>Answer:</u>
<u>ratios equivalent to 1/3=2/6,3/9</u>
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<u>Step-by-step explanation:</u>
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<u>Double number line is a diagram used when. quantities have different units.</u>
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<u>It shows each of the quantities on its own number line with corresponding pairs of values lined up.The values of each number line are not the same unless there is a 1:1 ratio between them.</u>
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<u>some ratios equivalent to 1:3 are;</u>
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<u>2:6,3:9,4:12,5:15,6:18,7:21,etc</u>