Which formula correctly determines the ratio of slope?

Which formula correctly determines the ratio of slope?

• A. Run / Rise
• B. Rise / Run
• C. Run divided by Rise
• D. Rise over Run

Answer: (A)

The slope measures how steep a line is by comparing vertical change to horizontal change. That means you take the rise (vertical change) and divide it by the run (horizontal change). So the ratio that defines slope is Rise over Run (Rise / Run). For example, if a line goes up 4 units for every 2 units it runs, the slope is 4/2 = 2. Using Run divided by Rise would flip the ratio and describe horizontal movement per vertical unit, not the steepness. Rise over Run (or Rise / Run) is the correct way to express slope.

The slope measures how steep a line is by comparing vertical change to horizontal change. That means you take the rise (vertical change) and divide it by the run (horizontal change). So the ratio that defines slope is Rise over Run (Rise / Run). For example, if a line goes up 4 units for every 2 units it runs, the slope is 4/2 = 2. Using Run divided by Rise would flip the ratio and describe horizontal movement per vertical unit, not the steepness. Rise over Run (or Rise / Run) is the correct way to express slope.