What is the equation of the line that has a slope of -1/3 and a y intercept of 5/2?

a. y=1/3x+5/2
b. y=-1/3x+5/2
c. y=5/2x-1/3
d. y=5/2x+1/3

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. b = (b) when the median weekly income for whites is $760, what does the equation in (a) predict for the median weekly income for blacks?