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Tutor profile: Molly W.

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Molly W.
Junior High and High School Math Teacher
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Questions

Subject: Pre-Algebra

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Question:

When solving an equation for a given variable *such as solving for x*, how can you prove if the answer is correct?

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Molly W.
Answer:

By substituting in the value for the given variable into the original equation. The value on both sides of the equation should be equivalent.

Subject: Basic Math

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Question:

What are the four basic math operations?

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Molly W.
Answer:

Addition, subtraction, multiplication and division.

Subject: Algebra

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Question:

Describe the difference between Linear, Exponential and Quadratic functions, and provide an example of each.

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Molly W.
Answer:

Linear functions have a constant rate of change, and therefore create a straight line when graphed. An example would be anything in the form y=mx+b. Exponential functions have a constant multiplier, and therefore when graphed will increase or decrease rapidly in the form of a sharp curve. An example would be anything in the form y=a*b^x Quadratic functions have a common second difference, and therefore create a "u" shape when graphed. An example would be anything in the form y=ax^2+bx+c.

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