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平面直角坐标系是初中数学的重点,也是历年中考热点之一,为了使同学们牢固地掌握该知识点,下面以近几年中考题为例,剖析一下该部分内容.例1点P(2m+2016,m-1)在x轴上,则点P的坐标为______.[解析]m-1=0,则m=1,2m+2016=2018.[反思]x轴上点的坐标为(x,0),y轴上点的坐标为(0,y),第一、三象限角平分线上点的横纵坐标相等,第二、四象限角平分线上点的
The plane rectangular coordinate system is the focus of junior high school mathematics, and it is also one of the hot spots in the senior high school entrance examination. In order to enable the students to firmly grasp this knowledge point, the following example will be used as an example to analyze the contents of this section. Example 1 point P (2m+ 2016,m-1) On the x-axis, the coordinate of the point P is ______. [Resolve] m-1=0, then m=1,2m+2016=2018. [Reflection] The coordinate of the point on the x-axis is (x,0), the coordinate of the point on the y-axis is (0,y), the horizontal and vertical coordinates of the point on the bisector angle of the first and the third quadrant are equal, and the second and the fourth quadrant of the point bisect the point on the line.