Unit 2: 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 slope is undefined when the line is vertical, meaning x1 = x2.

Front

Calculate the slope of the line that passes through the points (1, 2) and (3, 4).

Back

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

Front

What is the slope of a horizontal line?

Back

The slope of a horizontal line is 0.

Front

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

Back

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

Front

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

Back

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

Front

Find the slope of the line that passes through the points (2, 3) and (2, 5).

Back

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

Front

What is the slope of the line that passes through the points (4, 2) and (6, 6)?

Back

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

Front

What is the significance of the slope in a real-world context?

Back

The slope represents the rate of change between two variables.

Front

How do you interpret a slope of 1/2?

Back

For every 2 units you move right, the line moves up 1 unit.