The secant line from $\"\"$ to $\"\"$ when $\"\"$ is constant for the interval $\"\"$ .

Slope $\"\"$ .

$\"\"$

When a function is constant on an interval, the $\"\"$ -coordinates of each point in the interval are the same. Because $\"\"$ is a constant on the interval $\"\"$ , $\"\"$ .

$\"\"$

$\"\"$ .

Slope of the secant line is zero.

When a function is constant on an interval, the $\"\"$ -coordinates of each point in the interval are the same. Because $\"\"$ is a constant on the interval $\"\"$ , $\"\"$ .

Slope of the secant line is zero.