noun
upswing; upward trend line
Economic term for a line on a chart showing an upward trend, often used in technical analysis of stock prices or economic indicators.
株価チャートに上向線が引かれた。
An upswing line was drawn on the stock price chart.
トレンドライン is a more general term for trend line, while 上向線 specifically indicates an upward trend.
Compound of 上向 (upward direction) and 線 (line).