《2025年课课练江苏七年级数学下册苏科版》

5. 在数轴上表示下列不等式的解集：
（1）$x\geq - 1.5$； （2）$x＜5$.

答案：

6. 分别写出下列数轴表示的不等式的解集：
（1）$\begin{tikzpicture}[scale=0.8] \draw[-＞] (-2.5,0) -- (2.5,0); \foreach \x in {-2,-1,0,1,2} \draw (\x,0.1) -- (\x,-0.1) node[below] {\x}; \draw[thick] (-2,0) -- (1,0); \draw[fill=white] (1,0) circle (0.1); \node[above] at (-2,0) {}; \node[above] at (-1,0) {}; \node[above] at (0,0) {}; \node[above] at (1,0) {}; \node[above] at (2,0) {}; \node[right] at (2.5,0) {}; \node[left] at (-2.5,0) {}; \end{tikzpicture}$ （2）$\begin{tikzpicture}[scale=0.8] \draw[-＞] (-1.5,0) -- (3.5,0); \foreach \x in {-1,0,1,2,3} \draw (\x,0.1) -- (\x,-0.1) node[below] {\x}; \draw[thick] (-1,0) -- (2,0); \draw[fill=black] (2,0) circle (0.1); \node[above] at (-1,0) {}; \node[above] at (0,0) {}; \node[above] at (1,0) {}; \node[above] at (2,0) {}; \node[above] at (3,0) {}; \node[right] at (3.5,0) {}; \node[left] at (-1.5,0) {}; \end{tikzpicture}$
____________ ____________
（3）$\begin{tikzpicture}[scale=0.8] \draw[-＞] (-2.5,0) -- (1.5,0); \foreach \x in {-2,-1,0,1} \draw (\x,0.1) -- (\x,-0.1) node[below] {\x}; \draw[thick] (-1,0) -- (1,0); \draw[fill=black] (-1,0) circle (0.1); \node[above] at (-2,0) {}; \node[above] at (-1,0) {}; \node[above] at (0,0) {}; \node[above] at (1,0) {}; \node[right] at (1.5,0) {}; \node[left] at (-2.5,0) {}; \end{tikzpicture}$ （4）$\begin{tikzpicture}[scale=0.8] \draw[-＞] (-1.5,0) -- (3.5,0); \foreach \x in {-1,0,1,2,3} \draw (\x,0.1) -- (\x,-0.1) node[below] {\x}; \draw[thick] (-1,0) -- (2,0); \draw[fill=white] (2,0) circle (0.1); \node[above] at (-1,0) {}; \node[above] at (0,0) {}; \node[above] at (1,0) {}; \node[above] at (2,0) {}; \node[above] at (3,0) {}; \node[right] at (3.5,0) {}; \node[left] at (-1.5,0) {}; \end{tikzpicture}$
____________ ____________

答案：

7. 不等式$x\leq2025$有多少个解？有多少个整数解？有多少个正整数解？

答案：

8. 已知$(m - 3)x^{|m| - 2}-2＞6$是关于$x$的一元一次不等式，求$m$的值.

答案：