関連ワード:  is a horizontal line a linear function    is a vertical line a linear function    is a straight horizontal line a linear function    is a horizontal line a linear relationship    is a straight vertical line a linear function    is a vertical line a linear relationship    is a horizontal line on a graph a linear function    why is a horizontal line not a linear function    why is a vertical line not a linear function    is a vertical line on a graph a linear function  
結果 : is a horizontal line a linear function