In the figure, the graph of y = (x^2) + 8x passes through the origin and cuts the x-axis at A.
(a) Find the coordinates of A
answer: (-8, 0)
(b) Find the coordinates of the vertex
answer: (-4, -16)
(c) Given that the graph passes through (α, -α), find all possible values of α
*只須做C題...
quadratic function~~~f.4
2010-01-02 12:42 am
回答 (2)
2010-01-02 12:58 am
✔ 最佳答案
-x = (x^2) + 8x-9x = x^2
-9 = x
x = -9
α = -9
希望幫到你<3
2010-01-02 16:28:26 補充：
-9 or 0
參考: 自己 （其實我是你同學）
2010-01-02 2:07 am
α = 0 or -9
收錄日期: 2021-04-13 17:01:00
原文連結 [永久失效]:
https://hk.answers.yahoo.com/question/index?qid=20100101000051KK02804