Yahoo Answers: Answers and Comments for Please help with this math? [Mathematics]
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From celi
enUS
Mon, 22 Jul 2019 02:52:40 +0000
3
Yahoo Answers: Answers and Comments for Please help with this math? [Mathematics]
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https://answers.yahoo.com/question/index?qid=20190722025240AAFl1Oe
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From Mike G: Max = 6*4+8*8 = 88
Min = 6*1+8*1 = 14
https://answers.yahoo.com/question/index?qid=20190722025240AAFl1Oe
https://answers.yahoo.com/question/index?qid=20190722025240AAFl1Oe
Mon, 22 Jul 2019 03:43:18 +0000
Max = 6*4+8*8 = 88
Min = 6*1+8*1 = 14

From Captain Matticus, LandPiratesInc: Obviously, the further to the right we go and ...
https://answers.yahoo.com/question/index?qid=20190722025240AAFl1Oe
https://answers.yahoo.com/question/index?qid=20190722025240AAFl1Oe
Mon, 22 Jul 2019 02:59:11 +0000
Obviously, the further to the right we go and the further up we go, the greater the value will be. The further left and further down we go, the smaller the value will be
6 * 1 + 8 * 1 = 6 + 8 = 14
The minimum value occurs at (1 , 1) and it's 14.
The maximum value will occur somewhere along the rightmost border. So what we need to do is relate x to y and use a substitution to figure out where the maximum value occurs
x = 4 , y = 8
x = 5 , y = 2
(2  8) / (5  4) = 6/1 = 6
We need a line with a slope of 6 that passes through (4 , 8)
y  8 = 6 * (x  4)
y = 8  6 * (x  4)
y = 8  6x + 24
y = 32  6x
f(x , y) = 6x + 8y
f(x , y) = 6x + 8 * (32  6x)
f(x , y) = 6x + 256  48x
f(x , y) = 256  42x
x is bounded between 4 and 5, so 256  42 * 4 will give us the greatest value of f(x , y)
256  42 * 4 = 256  168 = 88
Maximum value is 88

From Indikos: max = 6*4 + 8*8 = 100
min = 6*1 + 8*1 = 14
https://answers.yahoo.com/question/index?qid=20190722025240AAFl1Oe
https://answers.yahoo.com/question/index?qid=20190722025240AAFl1Oe
Mon, 22 Jul 2019 02:56:38 +0000
max = 6*4 + 8*8 = 100
min = 6*1 + 8*1 = 14