Answer:
See below and attached graph
Explanation:
The equation of a line in slope-intercept form is
where m is the slope and y the y-intercept
Slope, m, is given by
where
and
are any two points on the line
I will compute the equations for two of the lines in Design A. Your team will have to work out the other equations
Design A
Line passing through (57,278) and (35,168)
So equation of the line passing through these points is
To find b plug in any of the point values. Let's choose (35,168)
Equation of this line is
Domain
Range
2. Line passing through (35,168) and (123,168)
Slope =
Equation is y = 0x + b or y = b
Plug in value for y = 168 to get the equation as
y = 168
Domain is
Range R=168
The attached graph shows the equations for each line in Design A as well as their domains and ranges
Hope that helps