9.) Using the sine function, write a formula for the graph: [3]}; : 83in(x)+4 [b] y : 4sin(x)+2 [c] y : 25in(x)+4 [d] y : 25in(x)+2 10. The instantaneous rate of change of a function fat xza is: [A] The slope of a secant line connecting {a,f[a]] to another point on the graph. [B] The change in the function value between [a,f[a]] and [b,f[b]]. [C] limhg f(+h;f{.) [D] A local maximum or minimum value off, if the rate ofchange equals 0