The equation which represents the total cost is y = 50x + 200.
Linear equation in two variable:
A linear equation in two variable can be described as a linear relationship between x and y (or any other two variables) that is , two variables in which the value of one of them depends on the value of the other one.
According to the question
we have
A web designer charges fee $200 and $50 per hour to build a website.
x represents the number of hour.
And, y represents the the total cost.
Therefore,
If the designer build a website for x hour, he will charge $50×x
So,
The total cost, y = charges for x hour + fee
The total cost, y = 50x + 200
Hence, y = 50x + 200 represents the equation for the total cost.
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