Question

Which direction is negative on the horizontal axis?

Answer 1

Starting from the origin, go along the x-axis in a negative direction (left) and along the y-axis in a positive direction (up).
Source: http://www.montereyinstitute.org/courses/DevelopmentalMath/COURSE_TEXT2_RESOURCE/U13_L1_T1_text_final.html#:~:text=%E2%88%925%2C%204)-,Starting%20from%20the%20origin%2C%20go%20along%20the%20x%2Daxis%20in,a%20positive%20direction%20(up).