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

What does it mean if the slope of a line is undefined?

Back

The line is vertical, meaning it goes straight up and down.

Front

Calculate the slope of the line that passes through the points (1, 2) and (3, 6).

Back

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

Front

What is the slope of a horizontal line?

Back

The slope is 0.

Front

If the slope of a line is negative, what does that indicate about the line's direction?

Back

The line descends from left to right.

Front

Find the slope of the line that passes through the points (4, 5) and (4, 9).

Back

The slope is undefined.

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

If a line has a slope of 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

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.

Front

What is the slope of a line that is vertical?

Back

The slope is undefined.