1, proportional function y = kx
2. Inverse proportional function y = k/x
3. linear function y = kx+b (k is not 0, but b can)
4. Quadratic function y = ax? +bx+c(a is not 0)
5. Trigonometric functions (8 kinds of * * *, 4 kinds of junior high school and 6 kinds of senior high school)
Include sine, cosine, tangent, cotangent, secant and cotangent.
6. Exponential function y = x A (A is not 0)
7, logarithmic function y = logax (x is not 0)
Ask if you need to take pictures.