Well when i was waiting for your response, i did and tried the probelm myself, first, drawing the line of best fit, choose two good y-intercepts, did the m=y2--y1/x2-x1 and got -16. After that the probelm started to become weird. I chose a piar of coordinates and use it in the equation y=mx+b, pluging in the numbers and solving it. The answer i got was y=-16x+1324, which was sort of close to one of the answer choses.
The graph is here https://www.meta-chart.com/share/untitled-10071
Question is: Which equation best represnt the line of best fit?
A. y=-16x+400
B. y=-15x+300
C. y=15x+-300
D. y=16x+400