Worked examples
Two examples
Example 1
How far apart are (2, 5) and (9, 5)?
- The y-values are the same, so the points are straight across from each other.
- Subtract the x-values: 9 − 2 = 7.
Answer: 7 units
Example 2
How far apart are (3, −4) and (3, 2)?
- The x-values are the same: straight up and down.
- 2 − (−4) = 6. (4 below the axis and 2 above: 4 + 2.)
Answer: 6 units
Where this is taught: The Coordinate Plane, “Distance along a grid line”
The drill
Ten problems
How many:
Type the number only; the unit is already there. Then press Check my answers at the bottom.Write each answer on the line. The answer key, with the reasoning, is on the last page.