Which is the equation of a parabola with vertex (0,0) and focus (0, 2)?
a. y2 = 8x
c. x2 = sy
b. y2 = 4x
d. x² = 47

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Graph the equationy= x+3[tex]y = x + 3[/tex]

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?