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Re: According to the chart, in which two-month period did electr [#permalink]
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siffyB wrote:
Shouldn't the answer be (A) January to February, since there is a decrease or negative increase? As opposed to 0 increase for the period April to May?
Where am I going wrong?


According to the chart, in which two-month period did electric energy cost increase the least?

read carefully the stem

Hope now is more clear
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Re: According to the chart, in which two-month period did electr [#permalink]
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From the chart we have to find the two month period where the two dots are as close in the height as possible because the line joining them would be most horizontal and the slope will be almost 0. If the slope is 0 then the increase in the y coordinate is the least and the energy cost increases the least. The only line or the two month period that satisfies the following is the April-May one.
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Re: According to the chart, in which two-month period did electr [#permalink]
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