Afunction is shown in the table below.
x f(x)
–4 2
–1 –4
0 –2
3 16
if included in the table, which ordered pair, (-4,1) or (1,-4), would result in a relation that is
no longer a function? explain your answer.

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?