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題目

解題步驟

1. Understand the question

   . $y = 4 - x$

   | $x$ | $y$ |
   | --- | --- |
   | $-4$ | |
   | $-1$ | |
   | $0$ | |
   | $5$ | |
   | $9$ | |

2. Explanation

   Step1: Substitute $x=-4$ into $y=4-x$

   $y=4-(-4)=4+4=8$

   Step2: Substitute $x=-1$ into $y=4-x$

   $y=4-(-1)=4+1=5$

   Step3: Substitute $x=0$ into $y=4-x$

   $y=4-0=4$

   Step4: Substitute $x=5$ into $y=4-x$

   $y=4-5=-1$

   Step5: Substitute $x=9$ into $y=4-x$

   $y=4-9=-5$

3. Final answer

   | $x$ | $y$ |
   |-----|-----|
   | -4 | 8 |
   | -1 | 5 |
   | 0 | 4 |
   | 5 | -1 |
   | 9 | -5 |

   To graph the line: plot the points $(-4,8)$, $(-1,5)$, $(0,4)$, $(5,-1)$, $(9,-5)$ on the coordinate grid, then draw a straight line passing through all these points.

答案

Question Analysis

OCR Text

. $y = 4 - x$

| $x$ | $y$ |
| --- | --- |
| $-4$ |  |
| $-1$ |  |
| $0$ |  |
| $5$ |  |
| $9$ |  |

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