Draw the straight line y=2x-3

One line passes through (-7,-4) and (5,4) . another line passes through the point (-4,6) and (6,-9)

Can somebody 1. what is the formula for finding the vertical distance between two points on a coordinate plane?

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?