Final answer:
The slope of a straight line between two points can be calculated using the formula: slope = (Y₂ - Y₁) / (X₂ - X₁). It is obtained by choosing two points on the line and plugging their coordinates into the formula.
Step-by-step explanation:
The slope of a straight line between two points can be calculated by using the formula:
slope = (Y₂ - Y₁) / (X₂ - X₁)
To calculate the slope, you need to choose two points on the line and plug their coordinates into the formula. For example, if you want to find the slope between two points with coordinates (X₁, Y₁) and (X₂, Y₂), you can substitute those values into the formula to calculate the slope.