doubt in math mock test

Maebara keiichi

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Nov 11, 2020, 10:53:20 PM11/11/20

to Discussion forum for Mathematics for Data Science I

could anyone explain question no. 16

Malabika Guha Mustafi

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Nov 11, 2020, 11:02:40 PM11/11/20

to Discussion forum for Mathematics for Data Science I, taruni...@gmail.com

Mock test Q.16@ CG, very methodical representation..really like it. On Thursday, 12 November 2020 at 00:35:12 UTC+5

Maebara keiichi

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Nov 11, 2020, 11:14:45 PM11/11/20

to Discussion forum for Mathematics for Data Science I, Malabika Guha Mustafi, Maebara keiichi

you are mistaken, the slope from 4 to 8pm isnt 120 its 0

Rahul POD

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Nov 12, 2020, 12:05:49 AM11/12/20

to Discussion forum for Mathematics for Data Science I, taruni...@gmail.com, Malabika Guha Mustafi

Malabika is not talking about slope. It is the value.

Maebara keiichi

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Nov 12, 2020, 12:23:58 AM11/12/20

to Discussion forum for Mathematics for Data Science I, Maebara keiichi, Malabika Guha Mustafi

could you explain from change or slope? i am still stuck with that

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Malabika Guha Mustafi

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Nov 12, 2020, 12:37:30 AM11/12/20

to Discussion forum for Mathematics for Data Science I, taruni...@gmail.com, Malabika Guha Mustafi

Slope of a line means the change , if slope =0 then the line is horizontal to x axis.

Now after 8 a.m to 4p.m , the pollution rises linearly. The slope of the line = rise/run or y difference / x difference = 80-40/ 3[ pollution value plotted in y axis and time plotted in x axis ].

Same way , when pollution falls from 8 p.m to 12 p.m { The y difference = 120- 40/3 =320/3 and x difference = 12-8= 4 so slope is (320/3)/4=80/3}

Hope it is clear now.

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