Nama : Fathul M. Rusdi
NPM : 09 53010007
NPM : 09 53010007
| x | y | x . y | x² |
| 1 | 1.7 | 1.7 | 1 |
| 2 | 3.7 | 7.4 | 4 |
| 3 | 5.7 | 17.1 | 9 |
| 4 | 8.7 | 34.8 | 16 |
| 5 | 12.7 | 63.5 | 25 |
| Σx = 15 | Σy = 32.5 | Σx.y = 124.5 | Σx² = 55 |
| Ditanya : Model matematika y = ax+b | ||
| Σxy = | Σx² . a + Σx . b | |
| Σy = | Σx . a + n . b | |
| Jawaban : | ||
| 124.5 | = | 55 | a | + | 15 | b | (*1) | |
| 32.5 | = | 15 | a | + | 5 | b | (*3) | - |
27 | = | 10 | a | |||||
| a | = | 2.7 | ||||||
| 32.5 | = | 15 | a | + | 5 | b | ||
| 32.5 | = | 40.5 | + | 5 | b | |||
| b | = | -1.6 | ||||||
| Jadi model matematikanya adalah y = 2.7x - 1.6 | ||||||||
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