6. Which of the following is a linear function? A. f(x) = 3 B. f(x) = x2 + x + 1 c. f(x) = x + 2 D. f(x) = x + 3 7. What is the degree of the function f(x) = 3x + 4? A. 1 B. 2 C. 3 D. 4
6. The answer is f(x) = x + 3 because it's highest degree is 1, you can also choose letter C. for it is also a linear, thus letter B. is a quadratic function.
