“平面直角坐标系”基础巩固
1.B 2。B 3。D 4。C
5.(3,q8n/wCXSwCvu+768pgGhByTMxOLWDjL7pvqQxfyXy40=0)6.(2,0)(答案不唯一) 7.10 8. (-5,-2)
9.略.
10.(1)画图略.
②略.
(2)①(-1,2)
11.(1)△(试读)...