Horizontal and Vertical Lines

Front

What is the slope of a horizontal line?

Back

0

Front

What is the slope of a vertical line?

Back

undefined

Front

What is the equation of a horizontal line?

Back

y = b, where b is a constant.

Front

What is the equation of a vertical line?

Back

x = a, where a is a constant.

Front

How does the slope of a line affect its steepness?

Back

A slope of 0 means no steepness (horizontal), while an undefined slope means it is vertical.

Front

What does the graph of y = 8 look like?

Back

A horizontal line at y = 8.

Front

What does the graph of x = -5 look like?

Back

A vertical line at x = -5.

Front

If a line has a positive slope, what direction does it go?

Back

It rises from left to right.

Front

If a line has a negative slope, what direction does it go?

Back

It falls from left to right.

Front

What is the slope-intercept form of a line?

Back

y = mx + b, where m is the slope and b is the y-intercept.