Finding Slope From Two Points

Front

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

Back

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

Front

If the points are (1, 2) and (3, 6), what is the slope?

Back

m = (6 - 2) / (3 - 1) = 4/2 = 2

Front

What does a slope of 0 indicate about a line?

Back

The line is horizontal.

Front

What does an undefined slope indicate about a line?

Back

The line is vertical.

Front

If the slope of a line is negative, what does that tell you about the direction of the line?

Back

The line descends from left to right.

Front

Calculate the slope between the points (2, 3) and (4, 7).

Back

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

Front

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

Back

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

Front

If the slope of a line is 3, what does this mean in terms of rise over run?

Back

For every 3 units the line rises, it runs 1 unit to the right.

Front

Find the slope of the line through the points (0, 0) and (5, 10).

Back

m = (10 - 0) / (5 - 0) = 10/5 = 2

Front

What is the slope of a line that goes through the points (2, 5) and (2, 8)?

Back

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