Question

Graph the inequality.
2 < x < 4
Plot the endpoints

Answer 1

On a number line, 2 < x < 4 is the open interval from 2 to 4: draw open (not filled) circles at 2 and 4 and shade the line between them.

Simple ASCII sketch:

...---|---|---|---|---...
1 2 3 4 5

o=======o
(2) (4)

Notes:
- The circles at 2 and 4 are open because the endpoints are not included.
- In interval notation: (2, 4).

If you want a plotted image, you can use this Python/matplotlib snippet:

import matplotlib.pyplot as plt
fig, ax = plt.subplots(figsize=(6,1.5))
ax.hlines(0, 2, 4, linewidth=6, color='C0')
ax.plot([2,4], [0,0], marker='o', markerfacecolor='white',
markeredgecolor='black', markersize=12)
ax.set_yticks([])
ax.set_xlim(0,6)
ax.set_xticks(range(0,7))
ax.spines['left'].set_visible(False)
ax.spines['right'].set_visible(False)
ax.spines['top'].set_visible(False)
plt.show()

Tell me if you want a PNG or SVG file of the graph.