b Relate each coordinate from Part A to the quantity the corresponding variable represents.
A
a (7,5.5)
B
b See solution.
Practice makes perfect
a To estimate the point of intersection we can note the approximate x- and y- coordinates of the point where the lines cross.
From the graph we can see that the point of intersection is approximately (7,5.5).
b It is given that x represents the number of years the company has been in business and y represents the total revenue of the company in billions of dollars. In Part A, we found that the solution to the system was approximately (7,5.5).
x=7 and y=5.5
In context, we can say that 7 years after the company has been in business their total revenue is 5.5 million dollars.
