(1)求當x＝–2,一1,O.5時y的值.
(2)求當y＝3, 9 ,一3 時對應的x的值.
我唔識怎樣在圖象里找到上面两題中...y或x的值..謝謝.
更新1:
請用中文解答和畫圖像..謝謝
教育學術(中三代數...急)
2008-03-31 6:50 am
畫出函數y＝3x＋12 的圖象,利用圖象;
(1)求當x＝–2,一1,O.5時y的值.
(2)求當y＝3, 9 ,一3 時對應的x的值.
我唔識怎樣在圖象里找到上面两題中...y或x的值..謝謝.
(1)求當x＝–2,一1,O.5時y的值.
(2)求當y＝3, 9 ,一3 時對應的x的值.
我唔識怎樣在圖象里找到上面两題中...y或x的值..謝謝.
回答 (2)
2008-03-31 1:37 pm
✔ 最佳答案
1) To find the corresponding y value for each x value, you can draw a vertical line at each x value. The intersection of the vertical line and the line y=3x+12 is the y value you want.2) Do the same thing was above, except that now you draw horizontal lines at each y value, and find the intersection of the horizontal lines and the line y=3x+12 .
2008-03-31 4:20 pm
可以用中文答嗎?因為我讀中文學校的....
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