1. 2. 3. 4. In the expression 2x +y - a which term would you expect to always be the same? If f(x) = 4x + 5, what is f(-1)? If $f(x) = 4x + 5$, what is $f(\\frac{1}{8})$? If f(x) = 4x + 5, what is f(x+2)? Hint: this is not a number, but an expression. Don't forget to simplify! 5. What is the average rate of change for $f(x) = 2x+3$? 6. 7. 8. What is the function that describes a horizontal line three units above the x-axis? Answer in the form f(x) = 9. What function has the pattern starting with the origin over one up one, over two up four both to the left and to the right? type your answer as: f(x) = **use x as the variable, use ^ to indicate exponent, use + * / to indicate the basic algebraic operations 10. \f