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Adamovskij9
@Adamovskij9
August 2022
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Дана линейная функция 1) у= 7,2 - 2,4х; 2) у = -4,6х - одна целая одна третья. Найдите х, если у = 1; у = -1; у = минус две третьих; у = 5
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Regent1828
Verified answer
1) у = 7,2 - 2,4х
у = 2,4(3 - х)
При у = 1 1 = 2,4(3 - х)
3 - х = 5/12
x = 2 7/12
При у = -1 -1 = 2,4(3 - х)
3 - х = -5/12
x = 3 5/12
При у = -2/3 -2/3 = 2,4(3 - x)
3 - x = -5/18
x = 3 5/18
При у = 5 5 = 2,4(3 - х)
3 - х = 2 1/12
x = 11/12
2) y = -4,6x - 1 1/3
При у = 1 1 = -4,6x - 1 1/3
4,6x = -2 1/3
x = -35/69
При у = -1 -1 = -4,6х - 1 1/3
4,6x = -1/3
x = -5/69
При у = -2/3 -2/3 = -4,6x - 1 1/3
4,6x = -2/3
x = -10/69
При у = 5 5 = -4,6x - 1 1/3
4,6x = -6 1/3
x = -1 26/69
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Answers & Comments
Verified answer
1) у = 7,2 - 2,4ху = 2,4(3 - х)
При у = 1 1 = 2,4(3 - х)
3 - х = 5/12
x = 2 7/12
При у = -1 -1 = 2,4(3 - х)
3 - х = -5/12
x = 3 5/12
При у = -2/3 -2/3 = 2,4(3 - x)
3 - x = -5/18
x = 3 5/18
При у = 5 5 = 2,4(3 - х)
3 - х = 2 1/12
x = 11/12
2) y = -4,6x - 1 1/3
При у = 1 1 = -4,6x - 1 1/3
4,6x = -2 1/3
x = -35/69
При у = -1 -1 = -4,6х - 1 1/3
4,6x = -1/3
x = -5/69
При у = -2/3 -2/3 = -4,6x - 1 1/3
4,6x = -2/3
x = -10/69
При у = 5 5 = -4,6x - 1 1/3
4,6x = -6 1/3
x = -1 26/69