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.