the graph shows y as a function of x:

graph of x against y shows 4 segments. segment a is a horizontal line parallel to the x-axis. segment b is a slanting straight line going down. segment c is a slanting line going up. segment d is a slanting straight line going down that touches the x-axis.

in which segment is the function constant?

a
b
c
d

When only separate discreet points are graphed it is called?

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?

Fast! find the length of cu. the triangles are similar. show your work.