Question

A. f(-2)= b. f(x)=2,x=

Answer 1

The generic form of a function is "f(x) = some function of x."

The "f(x) =" part is the same as saying "y =." When you're given something like f(x) = 2, that means y = 2, and you have to find the x value where y = 2. Remember that the y-axis runs vertically (up and down) and the x-axis runs horizontally (left to right). Looking at the graph, when y=2, x = -1.

When an x value is plugged into the function, the "x" in "f(x)" changes into the x value. So, f(-2) is asking for the y-value of the graph at x=-2. Using the graph, you can see that when x = -2, y = 3.

---

Your answers are:
A. f(-2)= 3
b. f(x)=2, x= -1