The question on the image asks: If we subtract 1 from the number -3.4 on the real number line, what would the new number be?

To solve this, we simply subtract 1 from -3.4: $-3.4 - 1 = -4.4$ So, the new number would be $-4.4$.

Would you like more details on this or any other math topic?

Here are some related questions you might consider:

1. What happens if we add a number to -3.4?
2. How does subtraction of negative numbers work?
3. Can you explain more about the real number line and its properties?
4. What are the rules for addition and subtraction of decimals?
5. How can this type of problem be visualized graphically?

Tip: When subtracting a positive number from a negative number, think of it as moving left on the number line.