Linear Equations in Two Unknowns
If the graph of the eqtuation 3x - 4y + 60 = 0 cuts the x-axis and y-axis at points A and B respectively, find the coordinates of A and B.
I will give 15 points if you answer the correct answer.
S2 Maths
2013-03-28 2:53 am
回答 (2)
2013-03-28 2:55 pm
✔ 最佳答案
你的問題解答如下 :x - 4y + 60 = 0
The coordinate of A is (a , 0) and the coordinate of B is (0 , b)
Sub x=a,y=0 into the equation,
a - 4(0) + 60 = 0
a - 0 + 60 = 0
a = -60
∴The coordinate of A is (-60,0)
Sub x=0, y=b into the equation,
(0) - 4(b) + 60 = 0
0 - 4b + 60 = 0
-4b = -60
4b = 60
b = 15
∴The coordinate of B is (0,15)
希望可以幫到你!
參考: me
2013-03-28 3:05 am
3x - 4y + 60 = 0
3x - 4y = -60
x/(-20) + y/15 = 1
So, A(-20, 0) and B(0, 15).
3x - 4y = -60
x/(-20) + y/15 = 1
So, A(-20, 0) and B(0, 15).
參考: me
收錄日期: 2021-04-13 19:23:19
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