Answer:
see the explanation
Explanation:
Part A
Sara
Find out the equation of the line
The equation of the line in slope intercept form is equal to

where
m is the slope
b is the y-intercept
x is the number of months
y is the number of comic books
we have

Find the slope m
we have the points
(0,12) and (4,20)

substitute

Each unit on the x-axis represent 0.5 months and each unit on the y-axis represent 4 comic books
The origin of the graph is the point (0,12), this point represent the y-intercept or the initial value (the value of y when the value of x is equal to zero)
Ashton
Find out the equation of the line
The equation of the line in slope intercept form is equal to

where
m is the slope
b is the y-intercept
x is the number of months
y is the number of comic books
we have


substitute

The origin of the graph is the point (0,2), this point represent the y-intercept or the initial value (the value of y when the value of x is equal to zero)
Part B
Compare the slope and y-intercept for the graphs of each function in terms of the quantities
Sara


Ashton


therefore
Sara's graph has the greater y-intercept than Ashton's graph
Ashton's graph has the greater slope than Sara's graph