Ellen makes and sells bookmarks. She graphs the number of bookmarks sold compared to the total money earned. What is the rate of change for the function graphed to the left?

Students were asked to answer a question at education and to say what is most important for them to succeed. The one which response stood out from the rest was practice. Persons who are definitely successful do not become successful by being born. They work hard and persistence their lives to succeeding. This is how you can obtain your goals. in this article, are one of the answer and question example that you could definitely benefit from to practice and develop your information and also give you insights that will help you to sustain your study in school.

Question:

Ellen makes and sells bookmarks. She graphs the number of bookmarks sold compared to the total money earned. What is the rate of change for the function graphed to the left?

Answer:

Given coordinates on the graph is (4,0), (8,10), (12,20).

We need to find the rate of change for the function graphed.

Actually rate of change is the second name of slope.

So, we need to find the slope between given coordinates.

We know slope formula

Let us choose first two coordinates (4,0), (8,10).

(x1,y1) = (4,0) and (x2,y2) = (8,10).

Plugging values of x1,x2,y1 and y2 in slope formula, we get

Slope=

Therefore, rate of change is 5/2 or $2.5 earned per bookmark sold.

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