That was way fewer responses than I wanted. Let's try again; what's the name of this downward sloping line that I've just drawn?

没几个人回答啊,我再问一遍,这条向下倾斜的曲线叫什么

耶鲁公开课 - 博弈论课程节选

The numbers clearly point to a downward sloping line for venture fundraising, both quarter by quarter and year over year.

FORBES: Venture Capital Fundraising Continues Its Downward Slide

Reading from right to left, the green line is almost uniformly upward sloping as we add antipodal countries until reaching Japan, and almost uniformly downward sloping for more equatorial countries.

FORBES: The correlation is there.