Solve for the other variable. (2 points: 1 point for the answer, 1 for showing the work) 4. Combine the two equations to eliminate one of the variables, and then solve for the other. (3 points: 1 for eliminating one variable, 1 for the answer, and 1 for showing your work)

Step-by-step explanation:

Let f be the function such that f(x)=-(x^2)+9.note that f(-3)=f(3)=0. hence the average rate of change between x=-3 and x=3 is 0.also note that its graph goes up from x=-3 to x=0, and then back down from x=0 to x=3.hence, both of them can be correct.