Mathematics
Mathematics
Problem
Find the domain of the function whose graph is the horizontal line segment joining the points and , including both endpoints. Express your answer in interval notation.Intuitive explanation
The domain of a function is simply the set of all -values where the function is defined. Since this function's graph is a horizontal line segment, it exists only between the leftmost and rightmost points—there's no vertical spread to worry about. Just identify where the segment starts and ends along the -axis, then write that interval with brackets to show both endpoints are included.
Intuitive explanation
The domain of a function is simply the set of all -values where the function is defined. Since this function's graph is a horizontal line segment, it exists only between the leftmost and rightmost points—there's no vertical spread to worry about. Just identify where the segment starts and ends along the -axis, then write that interval with brackets to show both endpoints are included.