Calculating Slope from 2 Points

When calculating the slope using two points (x1, y1) and (x2, y2), what is crucial for accurate results?

• Always subtract y1 from y2 and x1 from x2.

• Always subtract y2 from y1 and x2 from x1.

• Maintain consistency in the order of subtraction for both x and y coordinates.

• It doesn't matter which point is considered first, as long as the numbers are subtracted.

What is the slope of the line passing through the points (2, -1) and (0, 5)?

• 3

• -3

• 1/3

• -1/3

When finding the slope of a line from a table of values representing a linear equation, how many points are needed, and which ones can be used?

• Exactly two points, specifically the first and last points in the table.

• Any two points from the table can be chosen to calculate the slope.

• All points in the table must be used in a complex average calculation.

• Only points where x or y is zero can be used for calculation.