Slope from 2 Points

Front

What is the formula to calculate the slope (m) between two points (x1, y1) and (x2, y2)?

Back

m = (y2 - y1) / (x2 - x1)

Front

What does a slope of 0 indicate about a line?

Back

A slope of 0 indicates that the line is horizontal.

Front

What does a positive slope indicate about the direction of a line?

Back

A positive slope indicates that the line rises from left to right.

Front

What does a negative slope indicate about the direction of a line?

Back

A negative slope indicates that the line falls from left to right.

Front

What is the slope of a vertical line?

Back

The slope of a vertical line is undefined.

Front

Calculate the slope of the line that passes through the points (2, 3) and (4, 7).

Back

m = (7 - 3) / (4 - 2) = 4/2 = 2.

Front

Calculate the slope of the line that passes through the points (1, 1) and (1, 5).

Back

The slope is undefined because the x-coordinates are the same.

Front

If the slope of a line is -3, what does this tell you about the line's steepness?

Back

The line is steep and falls quickly from left to right.

Front

What is the slope of the line that passes through the points (0, 0) and (5, 5)?

Back

m = (5 - 0) / (5 - 0) = 1.

Front

What is the slope of the line that passes through the points (-1, -1) and (2, 2)?

Back

m = (2 - (-1)) / (2 - (-1)) = 3/3 = 1.