Slope, Slope Formula and Intercepts

Front

What is the slope formula?

Back

The slope formula is m = (y2 - y1) / (x2 - x1), where m is the slope, (x1, y1) and (x2, y2) are two points on a line.

Front

What type of slope is represented by a line that goes up from left to right?

Back

Positive slope.

Front

What type of slope is represented by a line that goes down from left to right?

Back

Negative slope.

Front

What type of slope is represented by a horizontal line?

Back

Zero slope.

Front

What type of slope is represented by a vertical line?

Back

Undefined slope.

Front

How do you find the rate of change between two points?

Back

The rate of change is found using the slope formula: m = (y2 - y1) / (x2 - x1).

Front

If a line has a slope of 3, what does this mean?

Back

For every 1 unit increase in x, y increases by 3 units.

Front

If a line has a slope of -1/3, what does this mean?

Back

For every 1 unit increase in x, y decreases by 1/3 units.

Front

What is the slope of a line that is perfectly horizontal?

Back

The slope is 0.

Front

What is the slope of a line that is perfectly vertical?

Back

The slope is undefined.