Worked examples
Two examples
Example 1
What is the slope of the line through (2, 5) and (6, 13)?
- Change in y over change in x: (13 − 5) ÷ (6 − 2) = 8 ÷ 4.
Answer: 2
Example 2
What is the slope of the line through (−3, 4) and (1, −4)?
- (−4 − 4) ÷ (1 − (−3)) = −8 ÷ 4.
- Subtract in the same order, top and bottom.
Answer: −2
Where this is taught: Lines on the Grid, “Slope from two points”
The drill
Ten problems
This drill also has challenge problems. They use the same skill, set up the way the GED test sometimes sets up a problem, so that it looks new at first.
How many:
Type each slope. A fraction like -2/3 is fine. 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.