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Question
fill in the table using this function rul\\(y = -10x + 2\\)\\(\
\\)
Step1: 当\(x = -5\)时,代入函数
将\(x = -5\)代入\(y = -10x + 2\),根据乘法和加法运算规则,先计算乘法\(-10\times(-5)=50\),再计算加法\(50 + 2 = 52\),所以\(y = -10\times(-5)+2 = 50 + 2 = 52\)。
Step2: 当\(x = -1\)时,代入函数
将\(x = -1\)代入\(y = -10x + 2\),先算乘法\(-10\times(-1)=10\),再算加法\(10 + 2 = 12\),即\(y = -10\times(-1)+2 = 10 + 2 = 12\)。
Step3: 当\(x = 0\)时,代入函数
把\(x = 0\)代入\(y = -10x + 2\),因为任何数乘以\(0\)都为\(0\),所以\(-10\times0 = 0\),再加上\(2\),得到\(y = -10\times0 + 2 = 0 + 2 = 2\)。
Step4: 当\(x = 1\)时,代入函数
将\(x = 1\)代入\(y = -10x + 2\),先算乘法\(-10\times1=-10\),再算加法\(-10 + 2 = -8\),即\(y = -10\times1 + 2 = -10 + 2 = -8\)。
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当\(x = -5\)时,\(y = 52\);当\(x = -1\)时,\(y = 12\);当\(x = 0\)时,\(y = 2\);当\(x = 1\)时,\(y = -8\)。
表格填写如下:
| \(x\) | \(y\) |
|---|---|
| \(-1\) | \(12\) |
| \(0\) | \(2\) |
| \(1\) | \(-8\) |