Question

In a certain region, the equation  y=19.485x+86.912  models the amount of a homeowner’s water bill, in dollars, where x is the number of residents in the home.

What does the slope of the equation represent in context of the situation?

1. The water bill increases by about $19 every month.

2. The water bill increases by about $19 for every additional resident in the home.

3. The water bill increases by about $87 every month.

4. The water bill increases by about $87 for every additional resident in the home.

Answer 1

B. The water bill increases by about $19 for every additional resident in the home.

Explanation:

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Answer 2

It's choice 2.

Explanation:

y=19.485x+86.912

The 19.485 is the slope of the graph of this equation. This gives the rate of change of the amount of the bill (above $86.912) for each added resident (x).