论文部分内容阅读
一、填空题 (每小题 2分 ,共 30分 )1.如果 xy 0 ,则点P(x ,y)在第 象限 .2 .函数y =x +2x +1的自变量x的取值范围是 .3.函数y =kx - 1k - 5 (k≠ 0 )的图像经过原点 .则k = .4 .如果直线y =2x +m不经过第二象限 ,则实数m的取值范围是 .5 .正比例函数y
First, fill in the blanks (2 points for each question, a total of 30 points) 1. If xy 0, then the point P (x, y) in the first quadrant. 2 . The function y = x +2 x +1 the value of the argument x The range is .3. The image of the function y =kx - 1k - 5 (k≠ 0 ) goes through the origin. Then k = .4. If the straight line y = 2x +m does not go through the second quadrant, the range of the real number m is .5 . Proportional function y