Graphs of linear equations can show how distance and time relate to each other. However, there are some challenges that come with using them:

• Confusion: Many students find it hard to understand the scales and units on the axes of the graphs.
• Wrong Ideas: Sometimes, students think they can use linear relationships in situations that aren't actually linear, which can lead to mistakes.
• Too Simple: In real life, many situations involve more than one factor, making simple linear models not enough.

Even with these challenges, there are ways to overcome them:

• Hands-on Activities: Getting involved in real-world situations can help students understand the ideas better.
• Visual Aids: Using clear examples and easy-to-follow graphs can help explain the information more clearly.

By taking these steps, students can improve their understanding of distance and time with linear equations.