# Tutor profile: Molly W.

## Questions

### Subject: Pre-Algebra

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

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

What are the four basic math operations?

Addition, subtraction, multiplication and division.

### Subject: Algebra

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

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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