the graph of a function must be linear if it has what characteristic?\nit passes through the origin.\nit…

the graph of a function must be linear if it has what characteristic?\nit passes through the origin.\nit crosses the x - axis more than once.\nit crosses the y - axis exactly once\nit has a constant slope.
Answer
Brief Explanations:
線形関数のグラフは傾きが一定です。原点を通る関数は必ずしも線形ではありませんし、x軸やy軸との交点の数は線形性を決定するものではありません。
Answer:
It has a constant slope.