What is the slope of the line represented by the equation y = –1/2x 1/4? -1/2 -1/4 1/4 ½

Hi my sisters and brothers can tell me the answer because i don’t understand the question

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?

Change negative exponents to positive. then solve. round to four decimal places