Question

Need help with this question for an exam!

The functions f(x) and g(x) are defined below.

f(x)= -x-4

g(x)= -1/2x^2

By graphing, determine where f(x) = g(x).


Possible Answers:

A. x= -4 x=0


B. x= -2 x=4


C. x= -2 x=2


D. x= 4 x=-8

Answer 1

The answer is x=-2 and x=4

Explanation:

The attachment 1 is the graph of f(x), the attachment 2 is the graph of g(x)

Mergin the two functions, you will have this

Wichh shows you that the 2 graph intersect when x=2 and x=4

It is more straight to solve the equation

`(-x^(2) )/(2) = -x-4`