Positive, Negative, Zero and Undefiined Slope

Front

What is a positive slope?

Back

A positive slope indicates that as the x-value increases, the y-value also increases. The line rises from left to right.

Front

What is a negative slope?

Back

A negative slope indicates that as the x-value increases, the y-value decreases. The line falls from left to right.

Front

What is a zero slope?

Back

A zero slope indicates that there is no change in the y-value as the x-value changes. The line is horizontal.

Front

What is an undefined slope?

Back

An undefined slope occurs when a line is vertical, meaning the x-value does not change while the y-value does.

Front

What type of line does the equation x = 4 represent?

Back

A vertical line.

Front

What type of line does the equation y = 3 represent?

Back

A horizontal line.

Front

What is the slope of a line that goes up from left to right?

Back

Positive slope.

Front

What is the slope of a line that goes down from left to right?

Back

Negative slope.

Front

How do you identify a vertical line on a graph?

Back

A vertical line has an undefined slope and is represented by an equation of the form x = a constant.

Front

How do you identify a horizontal line on a graph?

Back

A horizontal line has a zero slope and is represented by an equation of the form y = a constant.