问题 单项选择题

In the rectangular quadrant system shown above, which quadrant, if any, contains no point (x, y) that satisfies the equation 3x+5y=-2 ?()

A. none

B.Ⅰ

C. Ⅱ

D. Ⅲ

E. Ⅳ

答案

参考答案:B

解析:

The equation describes a line that crosses the x axis at -2/3 and crosses the y axis at -2/5, so it never passes through quadrant Ⅰ. You can plug in points from each axis to verify.

单项选择题
单项选择题 B1型题