Which statement about the equation y = 5x – 8 is correct? a. the equation represents a linear function because the equation is in the form y = mx + b. b. the equation represents a linear function because the equation has two variables, x and y. c. the equation does not represent a function because some x-values have more than one y-value.

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?