The rate of change is $55 per hour. The means that the hourly rate of the designer is $55 per hour
A linear equation is in the form:
y = mx + b
where y, x are variables, m is the slope of the line and m is the y intercept.
Let y represent the total cost of hiring for x hours. Hence:
[tex]Slope = \frac{y_2-y_1}{x_2-x_1} =\frac{950-125}{15-0} =55[/tex]
The rate of change is $55 per hour. The means that the hourly rate of the designer is $55 per hour
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