Finding Slope from a Table, Graph, and 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 a positive slope indicate about a line on a graph?

Back

A positive slope indicates that as x increases, y also increases.

Front

What does a negative slope indicate about a line on a graph?

Back

A negative slope indicates that as x increases, y decreases.

Front

What does a slope of zero mean?

Back

A slope of zero means the line is horizontal and there is no change in y as x changes.

Front

What does an undefined slope mean?

Back

An undefined slope means the line is vertical, and x does not change as y changes.

Front

Find the slope of the points (1, 2) and (4, 5).

Back

1

Front

Find the slope of the points (2, 3) and (2, 7).

Back

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Front

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

Back

2

Front

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

Back

The line decreases as it moves from left to right.

Front

How do you determine the slope from a graph?

Back

Choose two points on the line, find the rise (change in y) and run (change in x), then use m = rise/run.