According to the given data we have the following
points (-6,0) and (0,0)
equation of the line is y=mx+b
So, first we would calculate m as follows:
m=y2-y1/x2-x1
we would plug into the equation points (-6,0) and (0,0)
So, m=0-0/0-6
m=0/-6
m=0
So if m=0
0=0(6)+b
b=0
Therefore, y=0