Select the correct answer.
if x is a number that is 7 more than y, how do you express was a function of y?
a.
x= ry = 7 + x
b. x = f(y) = 7 + y
c. y=f(x) = 7x
od. y= f(x) = y-7
e. = rx) = 7+ y
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Write the point-slope form of the line passing through (2, -12) and parallel to y=3x.

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?

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