The slope of a line is a measure of the rate of change or steepness of a line. Slope is represented with the letter M

The slope of a line can be defined as the rise of the line over the run over a line.

A line with a**negative slope**will go down from left to right.

In addition, as x increases y will decrease.

A line with a**positive slope**goes up as you move from left to right.

As x increases y will also increase.

A line with an**undefined slope**will be vertical.

A y changes x will remain constant.

A line with**zero slope**will be horizontal.

As x changes y will remain constant.

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