问题1:在图形表上绘制以下点。验证它们是否在一条线上
(a)A(4,0),B(4,2),C(4,6),D(4,2.5)
解决方案:
The points A(4, 0), B(4, 2), C(4, 6), D(4, 2.5) lie on a line and the line is parallel to Y-axis.
(b)P(1,1),Q(2,2),R(3,3),S(4,4)
解决方案:
The points P(1, 1), Q(2, 2), R(3, 3), S(4, 4) lie on a line and the line is passing through origin.
(c)K(2,3),L(5,3),M(5,5),N(2,5)
解决方案:
The points K(2, 3), L(5, 3), M(5, 5), N(2, 5) do not lie on a line.
问题2:画出穿过(2,3)和(3,2)的线。找到该线与x轴和y轴相交的点的坐标。
解决方案:
The line meets x-axis at (5, 0) and the line meets y-axis at (0, 5).
问题3:写出每个相邻图形的顶点坐标。
Coordinates of the vertices of the figure PQRS: P(4, 3), Q(6, 1), R(6, 5), S(4, 7).
Coordinates of the vertices of the figure OABC: O(0, 0), A(2, 0), B(2, 3), C(0, 3).
Coordinates of the vertices of the figure KLM: K(10, 5), L(7, 7), M(10, 8).
问题4:说明是对还是错。纠正是错误的。
(i)x坐标为零而y坐标为非零的点将位于y轴上。
Answer: True.
(ii)y轴位于y坐标为零且x坐标为5的点。
Answer: False.
Correction: A point whose y coordinate is zero and x-coordinate is 5 will lie on x-axis.
(iii)原点的坐标为(0,0)。
Answer: True.