2025年山西初中学业水平测试靶向联考试卷（二）
数学参考答案及评分标准
一、选择题
题号12345678910
答案BDCACBBBDC
二、填空题
x-3?x?y2，95
11.12.折线统计图13.?14.-815.
2?50x?10y3019
三、解答题
2
16.1原式2×-32+1+-3··············································································4
解：（）（）分
2
2-32+1-3
-22-2.········································································································5分
?x?3＞0，①
（2）?
）+3≥3.②
?2（x-1x
解不等式①，得x＞﹣3.·······································································································6分
解不等式②，得x≤1.···········································································································7分
∴原不等式组的解集为﹣3＜x≤1.······················································································8分
∴﹣1是该不等式组的解，··································································································9分
2不是该不等式组的解．···································································································10分
17.（1）解：如答图所示，点P即为所求作.
······························································································3分
第17题答图
（2）证明：由（1）中所作的图形可知：PAPC，
数学答案第1页共6页
ABBC
∵＝，
BPAC.·······················