Apainter paints 3 rooms in 7 hours. express y in terms of x, where y is the number of hours the painter takes to paint x rooms.

Step-by-step explanation:

Let

x-----> the number of rooms

y----> the number of hours

we know that

using proportion

none of the above.

for one of the equations to be used in the process, there has to be a term in the equation since squared is .

since there is only a term in the first equation, we cannot derive a from completing the square.

solving with completing the square