Answer:
1. $120
2. $2200
Step-by-step explanation:
The linear function representing Eric' s to total pay is
2200 + 120x = y
By rearranging it, it becomes
y = 120x + 2200
where
y represents the total pay
x represents the number of copies sold
Recall, the slope intercept equation is expressed as
y = mx + c
where
m represents slope or rate of change
c represents y intercept or the value of y when x = 0
By comparing both equations,
rate of change = 120
If he doesn't sell any fun book, x = 0. y = 120 * 0 + 2200. Thus
y intercept = 2200
Thus, we have
The change in Eric's total pay for each Math fun book he sells is $120
Eric's total pay if he doesn't sell any math fun book is $2200