Answer:
Explanation:
First, write the equation with the information we have.
S= total salary this month
N= number of copies sold
Equation: S= 1600+40N
1600 represents his monthly salary (your y-intercept)
and 40 represents the number of dollars he makes per copy sold (slope)
To graph the equation, start your first point on the y-intercept at (0,1600) and move up 40 and right 1 for every copy of the book sold.