The slope is (change in y)/(change in x)= (y1-y2)/(x1-x2). It doesn't matter which values y1 and x1 are as long as they come from the same point, so we can have (-96-(-86))/(82-87)=-10/-5=2 as the slope
i don't know how to explain it but this seems the most correct one, her weekly gross pay is 424 and taxes end up getting taken out of the paycheck not earnings.