If 3x>-2y and y<0, then(x/y)=?

👨🏻‍🏫 學術台數學

[匿名]

2010-01-22 7:20 am

If 3x>-2y and y<0 , then (x/y) = ?
this is HKCEE 1989 math pastpaper,
but I cant find the answer from the solution

回答 (2)

用戶9112

2010-01-22 7:25 am

✔ 最佳答案

3x > -2y
x > -2y/3
x/y < -2/3 Has to change the direction of the inequality sign when both sides are divided / multiplied by a negative number (y)

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用戶87381

2010-01-23 9:16 pm

Because y<0, so y is a negative number.

3x > -2y

x > (-2/3)y

x/y < -2/3 (Change the inequality sign because y is a negative number)

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