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The question asks for the value of \( C - F \), where the points \( C \) and \( F \) are positioned on a number line.

Here’s how we can solve it:

1. The number line has points ranging from \( -1 \) to \( 1 \), with seven evenly spaced points labeled \( A, B, C, D, E, F, G \).

2. Since the points are evenly spaced, we can divide the total interval between \( -1 \) and \( 1 \), which is a length of \( 2 \) units, into six equal parts.

3. The positions of the points are as follows:
   - \( A = -1 \)
   - \( G = 1 \)
   - \( D = 0 \) (since it’s at the center of the number line)

   Using equal spacing, we calculate the positions of the other points:
   - \( B = -\frac{2}{3} \)
   - \( C = -\frac{1}{3} \)
   - \( E = \frac{1}{3} \)
   - \( F = \frac{2}{3} \)

4. Now, we subtract the value of \( F \) from \( C \):
   \[
   C - F = -\frac{1}{3} - \frac{2}{3} = -\frac{3}{3} = -1
   \]

Thus, the value of \( C - F \) is \( \boxed{-1} \).

Would you like any additional details or have any other questions?

### Related questions:
1. How can we verify the even spacing of the points on the number line?
2. How would the positions change if the interval was larger or smaller than 2 units?
3. How would you find the positions of points if there were a different number of evenly spaced points?
4. How do you calculate the distance between any two points on a number line?
5. What happens when the number line extends beyond the values of \( -1 \) and \( 1 \)?

**Tip:** When subtracting fractions, remember to find a common denominator before simplifying!

Seven points are plotted on the number line. What is the value of C - F?

Learn how to calculate the difference between points C and F on a number line. This problem involves fractions and even spacing on a number line between -1 and 1. Perfect for students in Grades 6-8.

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