Since you're reflecting both points across the x axis they'll be the same, but flipped.
S will be (-6, 5) and Q will be (2, -1)
B. I think it’s b but I’m not sure
If the salesperson earns 3%, then that's 0.03*1400, which equals 42 dollars of commission
X intercept is (-250,0) and y intercept is (0,100). Intercepts are where a line crosses the x axis and y axis.