Which number line correctly represents −7+8?
The number line that correctly represents −7+8 is:
-11 -10 -9 -8 -7 -6 -5 -4 -3 -2 -1 0 1 2 3 4 5 6 7 8 9 10 11
The point that represents -7 would be 7 units to the left of 0, and then adding 8 units would put us at the point that represents 1.
To represent the expression −7+8 on a number line, we start at -7 and move 8 units to the right. Here's the step-by-step representation:
1. Draw a horizontal line.
2. Label the initial point as -7.
3. Starting from -7, move 1 unit to the right and label the new point as -6.
4. Continue moving 1 unit to the right until you reach 8 points.
5. Label the last point as +1.
6. The number line now represents the expression −7+8.