Arelation is plotted as a linear function on the coordinate plane starting at point a (0, 3)
and ending at point b (2, 7).

what is the rate of change for the linear function and what is its initial value?

select the choices to correctly complete the statements.

the rate of change is ? use one of these choices on this side to replace the question mark.
a) 0
b) 2
c) 4,
d) 7

and the initial value is ? use these choices here not above, but here to replace the question mark.
a) 0
b 2
c) 3
d) 7

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?