Data from 2005 for various age groups show that for each $100 increase in the median
Data from 2005 for various age groups show that for each $100 increase in the median weekly income for whites, the median weekly income of blacks increases by $105. Also, for workers of ages 25 to 54 the median weekly income for whites was $676 and for blacks was $527.† (a) Let W represent the median weekly income for whites and B the median weekly income for blacks, and write the equation of the line that gives B as a linear function of W.