Answer:
Slope of a line represents the money billed per lesson length.
Explanation:
Slope of a line defined as the the number that measures the steepness and it is usually denoted by m.
It is also states the gradient of a line or the change in variable of y to the change in variable of x.
As per the statement:
Slope of a line is 2/3.
Here x axis represents the lesson length in minute and y axis represents the money billed in dollars
Then;
Slope of a line represents the money billed per lesson length.