Using ƒ(x) = x + 6 and the domain { -1, 0, 1 }, find the range.

What is the axis of symmetry of the function f(x)=-(x+ 9)(x-21)

I’m really confused and need to learn this

In order for the function to be linear, what must m be and why? m = 22 because the rate of change is 1. m = 20 because the rate of change is 3. m = 22 because the rate of change is -1. m = 20 because the rate of change is -3.