10 points the graph below shows the price, y, in dollars, of different amounts of pounds of cheese, x: a graph titled cheese prices shows number of pounds on x axis and price in dollars on y axis. the scale on the x axis shows numbers from 0 to 12 at increments of 2, and the scale on the y axis shows numbers from 0 to 72 at increments of 12. a straight line joins the ordered pairs 0, 0 and 12, 72 which equation best represents the relationship between x and y? y = x + 6 y = 12x y = x + 12 y = 6x

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?